Document Information


PMID 17174478  (  )
Title Developing master keys to brain pathology, cancer and aging from the structural biology of proteins controlling reactive oxygen species and DNA repair.
Abstract This review is focused on proteins with key roles in pathways controlling either reactive oxygen species or DNA damage responses, both of which are essential for preserving the nervous system. An imbalance of reactive oxygen species or inappropriate DNA damage response likely causes mutational or cytotoxic outcomes, which may lead to cancer and/or aging phenotypes. Moreover, individuals with hereditary disorders in proteins of these cellular pathways have significant neurological abnormalities. Mutations in a superoxide dismutase, which removes oxygen free radicals, may cause the neurodegenerative disease amyotrophic lateral sclerosis. Additionally, DNA repair disorders that affect the brain to various extents include ataxia-telangiectasia-like disorder, Cockayne syndrome or Werner syndrome. Here, we highlight recent advances gained through structural biochemistry studies on enzymes linked to these disorders and other related enzymes acting within the same cellular pathways. We describe the current understanding of how these vital proteins coordinate chemical steps and integrate cellular signaling and response events. Significantly, these structural studies may provide a set of master keys to developing a unified understanding of the survival mechanisms utilized after insults by reactive oxygen species and genotoxic agents, and also provide a basis for developing an informed intervention in brain tumor and neurodegenerative disease progression. The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.

NOTE: Color highlight is limited to the abstract and SciMiner text-mining mode. If you see much more identified targets below from "Targets by SciMiner Summary" and "Targets by SciMiner Full list", they may have been identified from the full text.



Targets by SciMiner Summary

HUGO ID Symbol Target Name #Occur ActualStr
12791WRNWerner syndrome71werner syndrome | WRN |
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)63TFIIH | XPB | XPB-family |
7872NOS1nitric oxide synthase 1 (neuronal)37NOS | nNOS | NOS-peptide | neuronal nitric oxide synthase |
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))28SOD1 | superoxide dismutase1 | SOD-mediated | superoxide dismutase |
7965NR1H2nuclear receptor subfamily 1, group H, member 221NER | NER-specific |
11180SOD2superoxide dismutase 2, mitochondrial12manganese superoxide dismutase | MnSOD |
1516CATcatalase9catalase |
270PARP1poly (ADP-ribose) polymerase family, member 19PARP-1 | poly adp ribose polymerase | poly adp ribose polymerase 1 |
9816RAD50RAD50 homolog (S. cerevisiae)8Rad50 |
7873NOS2Anitric oxide synthase 2A (inducible, hepatocytes)8iNOS | nitric oxide synthase |
7230MRE11AMRE11 meiotic recombination 11 homolog A (S. cerevisiae)7Mre11 |
3650FEN1flap structure-specific endonuclease 16fen 1 | FEN-1 |
22948NLRP2NLR family, pyrin domain containing 26Nbs1 |
1058BLMBloom syndrome6bloom syndrome | BLM |
7876NOS3nitric oxide synthase 3 (endothelial cell)5eNOS |
4055XRCC6X-ray repair complementing defective repair in Chinese hamster cells 6 (Ku autoantigen, 70kDa)5Ku70 |
23696TIPARPTCDD-inducible poly(ADP-ribose) polymerase5parp 1 |
9817RAD51RAD51 homolog (RecA homolog, E. coli) (S. cerevisiae)5Rad51 | RecA-like |
9413PRKDCprotein kinase, DNA-activated, catalytic polypeptide4DNA-PK |
12950SF1splicing factor 14SF1 |
8729PCNAproliferating cell nuclear antigen3PCNA |
12814XPAxeroderma pigmentosum, complementation group A3xeroderma pigmentosum |
9208PORP450 (cytochrome) oxidoreductase2cytochrome p450 reductase | nadph dependent cytochrome p450 reductase |
9824RAD52RAD52 homolog (S. cerevisiae)2Rad52 |
795ATMataxia telangiectasia mutated1ATM |
443ALS2amyotrophic lateral sclerosis 2 (juvenile)1ALS2 |
620APPamyloid beta (A4) precursor protein (peptidase nexin-II, Alzheimer disease)1amyloid-like |
4739H2AFXH2A histone family, member X1H2AX |
9122PMS2PMS2 postmeiotic segregation increased 2 (S. cerevisiae)1dna mismatch repair |
445SETXsenataxin1SETX |
7983NR5A1nuclear receptor subfamily 5, group A, member 11sf 1 |
11729TERF2telomeric repeat binding factor 21TRF2 |
10289RPA1replication protein A1, 70kDa1RPA |
9950RECQL5RecQ protein-like 51RecQ5 |
12649VAPBVAMP (vesicle-associated membrane protein)-associated protein B and C1VAPB |
11998TP53tumor protein p531p53 |
10780SFRS1splicing factor, arginine/serine-rich 1 (splicing factor 2, alternate splicing factor)1SF2 |
9948RECQLRecQ protein-like (DNA helicase Q1-like)1RecQ1 |
1613CCScopper chaperone for superoxide dismutase1CCS |
1101BRCA2breast cancer 2, early onset1BRCA2 |
11609TBXAS1thromboxane A synthase 1 (platelet, cytochrome P450, family 5, subfamily A)1cytochrome p450 |
2615CYP2B6cytochrome P450, family 2, subfamily B, polypeptide 61P450 |

 


Targets by SciMiner Full list

HUGO ID Symbol Name ActualStr Score FlankingText
11180SOD2superoxide dismutase 2, mitochondrialMnSOD1.9Fig 1 The Human MnSOD active site
11180SOD2superoxide dismutase 2, mitochondrialMnSOD1.9In the wild type MnSOD structure (PDB PDB code 1N0J the His26 His74 His163 and
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7Fig 2 Proposed holo -NOS
7872NOS1nitric oxide synthase 1 (neuronal)nNOS2.7a The modular structure of nNOS
7872NOS1nitric oxide synthase 1 (neuronal)nNOS2.7This schematic representation shows the domain organization of nNOS indicated above the regions binding the substrate and cofactors below
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7Fig 3 Proposed holo -NOS assembly and domain movements
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7a Three possible models for dimeric holo -NOS dimeric NOSox and NOSred modules are represented by pairs of
9816RAD50RAD50 homolog (S. cerevisiae)Rad500.6b DNA binding straightens the Rad50 coiled coils which favors inter-complex tethering via Rad50 Zn-hooks with
9816RAD50RAD50 homolog (S. cerevisiae)Rad500.6straightens the Rad50 coiled coils which favors inter-complex tethering via Rad50 Zn-hooks with extended and parallel (more more ...
12791WRNWerner syndromeWRN3.5Fig 6 WRN exonuclease structure and hexameric ring model
12791WRNWerner syndromeWRN3.5a WRN protein is modular composed of an N-terminal exnuclease domain (blue),
12791WRNWerner syndromeWRN3.5b The WRN exonuclease (more more ...
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Fig 7 XPB conserved motifs and structural architecture
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4a Schematic alignment between Af XPB Af and human XPB Hs
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4a Schematic alignment between Af XPB Af and human XPB Hs
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Fig 8 Proposed structure-based mechanism whereby damage verification by XPB promotes unwinding of damaged dsDNA for NER
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3damage verification by XPB promotes unwinding of damaged dsDNA for NER
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4a Schematic model shows how XPB DRD depicted in blue HD1 cyan RED motif red HD2
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Af XPB Archaeoglobus fulgidus XPB AH auto-inhibitory helix ATLD ataxiatelangiectasia-like disorder BER
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Af XPB Archaeoglobus fulgidus XPB AH auto-inhibitory helix ATLD ataxiatelangiectasia-like disorder BER base excision repair
7230MRE11AMRE11 meiotic recombination 11 homolog A (S. cerevisiae)Mre112.3helicase RNase D conserved domain MMR mismatch repair MRN Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1 mtDNA mitochondrial DNA NER nucleotide excision repair NO
9816RAD50RAD50 homolog (S. cerevisiae)Rad500.6RNase D conserved domain MMR mismatch repair MRN Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1 mtDNA mitochondrial DNA NER nucleotide excision repair NO nitric
22948NLRP2NLR family, pyrin domain containing 2Nbs11.3D conserved domain MMR mismatch repair MRN Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1 mtDNA mitochondrial DNA NER nucleotide excision repair NO nitric oxide
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3mismatch repair MRN Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1 mtDNA mitochondrial DNA NER nucleotide excision repair NO nitric oxide e i or nNOS
7872NOS1nitric oxide synthase 1 (neuronal)nNOS2.7NER nucleotide excision repair NO nitric oxide e i or nNOS endothelial inducible or neuronal nitric oxide synthase NOSox NOS catalytic
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7or nNOS endothelial inducible or neuronal nitric oxide synthase NOSox NOS catalytic oxygenase module NOSred NOS reductase module NHEJ nonhomologous end
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7neuronal nitric oxide synthase NOSox NOS catalytic oxygenase module NOSred NOS reductase module NHEJ nonhomologous end joining ROS reactive oxygen species
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4reductase module NHEJ nonhomologous end joining ROS reactive oxygen species SOD superoxide dismutase SSBs single-strand breaks TC-NER transcription-coupled nucleotide excision repair
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4rapidly scavenged in the cell by the superoxide dismutase (SOD) SOD enzymes
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4SOD enzymes catalyze the disproportionation of superoxide anion radicals to molecular
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4The important role of SOD in the brain was highlighted by genetic inactivation of the
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4was highlighted by genetic inactivation of the mitochondrial form of SOD manganese SOD (MnSOD), MnSOD in mice
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4by genetic inactivation of the mitochondrial form of SOD manganese SOD (MnSOD), MnSOD in mice
11180SOD2superoxide dismutase 2, mitochondrialMnSOD1.9inactivation of the mitochondrial form of SOD manganese SOD (MnSOD), MnSOD in mice
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4Treatment with an SOD mimetic MnTBAP rescued the MnSOD _amp_#x02212;/_amp_#x02212; _amp_#x02212 _amp_#x02212 mutant mice
11180SOD2superoxide dismutase 2, mitochondrialMnSOD1.9Treatment with an SOD mimetic MnTBAP rescued the MnSOD _amp_#x02212;/_amp_#x02212; _amp_#x02212 _amp_#x02212 mutant mice from this systemic pathology and
11180SOD2superoxide dismutase 2, mitochondrialMnSOD1.9of ROS ( Melov et al. 1998 normally removed by MnSOD
11180SOD2superoxide dismutase 2, mitochondrialMnSOD1.9To define how MnSOD controls ROS levels in the cell the molecular mechanism of
11180SOD2superoxide dismutase 2, mitochondrialMnSOD1.9controls ROS levels in the cell the molecular mechanism of MnSOD has been extensively characterized through combined structural and biochemical studies
11180SOD2superoxide dismutase 2, mitochondrialMnSOD1.9The crystal structure of human MnSOD revealed that the enzyme forms a homotetramer ( Borgstahl et
11180SOD2superoxide dismutase 2, mitochondrialMnSOD1.9suggests that maintenance of the correct hydrogen bond partners in MnSOD is essential for the highly tuned reactivity of the active
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD12.9However mutations in the superoxide dismutase1 (SOD1) SOD1 gene give rise to approximately 20% of FALS cases (
443ALS2amyotrophic lateral sclerosis 2 (juvenile)ALS21.8et al. 2002 while mutations in several other genes including ALS2 SETX or VAPB cause much rarer forms of FALS (
445SETXsenataxinSETX0.3al. 2002 while mutations in several other genes including ALS2 SETX or VAPB cause much rarer forms of FALS ( Kunst
12649VAPBVAMP (vesicle-associated membrane protein)-associated protein B and CVAPB0.3while mutations in several other genes including ALS2 SETX or VAPB cause much rarer forms of FALS ( Kunst 2004
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD12.9SOD1 encodes a cytosolic copper zinc superoxide dismutase (Cu,Zn Cu Zn
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4encodes a cytosolic copper zinc superoxide dismutase (Cu,Zn Cu Zn SOD which similar to the mitochondrial MnSOD is responsible for the
11180SOD2superoxide dismutase 2, mitochondrialMnSOD1.9dismutase (Cu,Zn Cu Zn SOD which similar to the mitochondrial MnSOD is responsible for the disproportionation of harmful superoxide radicals to
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4Structural studies on human Cu Zn SOD have revealed that the enzyme is composed of two identical
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD12.9A multitude of SOD1 mutations have been identified in FALS patients ( Gaudette et
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4The mutations are dispersed throughout the 153 amino acid residue SOD polypeptide ( Deng et al. 1993
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4data support the idea that toxicity of intracellular Cu Zn SOD aggregates may result from protein misfolding or impaired protein degradation
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4found in the cytoplasm are strongly immunoreactive to Cu Zn SOD antibodies and cannot be dissociated with strong detergents or reducing
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD-mediated2.9One proposed mechanism of FALS mutant SOD-mediated toxicity is the coprecipitation of mutant Cu Zn SOD with
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4mutant SOD-mediated toxicity is the coprecipitation of mutant Cu Zn SOD with essential cellular components ( Bruijn et al. 1998 Johnston
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4and this has been demonstrated with the copper chaperone for SOD (CCS)( CCS Kato et al. 2001 nitric oxide synthase (NOS)
1613CCScopper chaperone for superoxide dismutaseCCS1.2has been demonstrated with the copper chaperone for SOD (CCS)( CCS Kato et al. 2001 nitric oxide synthase (NOS) NOS and
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7(CCS)( CCS Kato et al. 2001 nitric oxide synthase (NOS) NOS and phosphorylated neurofilaments ( Chou et al. 1996
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4is not entirely clear how the many different Cu Zn SOD single-site mutations which are widely dispersed throughout the protein sequence
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4combined structural biochemical and biophysical characterizations of two FALS mutant SOD proteins ( DiDonato et al. 2003
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))SOD3.4two FALS proteins represent the two major structural classes of SOD mutations
620APPamyloid beta (A4) precursor protein (peptidase nexin-II, Alzheimer disease)amyloid-like1.0post-mortem studies of FALS patients and bind dyes that detect amyloid-like structure
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7at the synthesis level by the nitric oxide synthase (NOS) NOS enzymes
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7The NOS enzymes produce NO through the conversion of arginine to citrulline
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7In mammals there are three NOS isoforms which have been named after the activity or tissue
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7These NOS isoforms are neuronal NOS (nNOS), nNOS endothelial NOS (eNOS) eNOS
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7These NOS isoforms are neuronal NOS (nNOS), nNOS endothelial NOS (eNOS) eNOS and inducible NOS (iNOS)
7872NOS1nitric oxide synthase 1 (neuronal)nNOS2.7These NOS isoforms are neuronal NOS (nNOS), nNOS endothelial NOS (eNOS) eNOS and inducible NOS (iNOS) iNOS nNOS
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7These NOS isoforms are neuronal NOS (nNOS), nNOS endothelial NOS (eNOS) eNOS and inducible NOS (iNOS) iNOS nNOS and eNOS
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS2.2NOS isoforms are neuronal NOS (nNOS), nNOS endothelial NOS (eNOS) eNOS and inducible NOS (iNOS) iNOS nNOS and eNOS are constitutively
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7neuronal NOS (nNOS), nNOS endothelial NOS (eNOS) eNOS and inducible NOS (iNOS) iNOS nNOS and eNOS are constitutively expressed isozymes controlling
7873NOS2Anitric oxide synthase 2A (inducible, hepatocytes)iNOS2.7(nNOS), nNOS endothelial NOS (eNOS) eNOS and inducible NOS (iNOS) iNOS nNOS and eNOS are constitutively expressed isozymes controlling basal NO
7872NOS1nitric oxide synthase 1 (neuronal)nNOS2.7nNOS endothelial NOS (eNOS) eNOS and inducible NOS (iNOS) iNOS nNOS and eNOS are constitutively expressed isozymes controlling basal NO levels
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS2.2NOS (eNOS) eNOS and inducible NOS (iNOS) iNOS nNOS and eNOS are constitutively expressed isozymes controlling basal NO levels and synthesizing
7873NOS2Anitric oxide synthase 2A (inducible, hepatocytes)iNOS2.7synthesizing NO in response to increases in intracellular calcium levels iNOS is expressed in response to specific cytokines growth factors or
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7Functional NOS isozymes are homodimers and each isozyme subunit contains an N-terminal
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7two tetrahydrobiopterin cofactors and a zinc ion that stabilize the NOS dimer interface ( Crane et al. 1998 Raman et al.
2615CYP2B6cytochrome P450, family 2, subfamily B, polypeptide 6P4501.9NOSred belongs to a large protein family including NADPH-dependent cytochrome P450 reductase and sulfite reductase flavoprotein
7872NOS1nitric oxide synthase 1 (neuronal)nNOS2.7biochemistry data elucidated from a fully assembled reductase dimer of nNOS ( Fig 2b c provided critical insights into this domain's
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7regulatory element the C-terminal tail and phosphorylation function to regulate NOS activity which is exquisitely tuned to control NO production (
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS2.2In addition eNOS and nNOS contain the 42_amp_#x02013 45-residue auto-inhibitory helix (AH) AH
7872NOS1nitric oxide synthase 1 (neuronal)nNOS2.7In addition eNOS and nNOS contain the 42_amp_#x02013 45-residue auto-inhibitory helix (AH) AH within the
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS2.2of a protruding _amp_#x003b2 -finger present in the CD of eNOS and nNOS plays an autoinhibitory role in the control of
7872NOS1nitric oxide synthase 1 (neuronal)nNOS2.7protruding _amp_#x003b2 -finger present in the CD of eNOS and nNOS plays an autoinhibitory role in the control of NO by
7876NOS3nitric oxide synthase 3 (endothelial cell)eNOS2.2The upregulation of eNOS and nNOS activity is controlled by phosphorylation of both the
7872NOS1nitric oxide synthase 1 (neuronal)nNOS2.7The upregulation of eNOS and nNOS activity is controlled by phosphorylation of both the CT and
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7An experimentally determined structure of full-length NOS remains elusive perhaps due to the required flexibility of its
7872NOS1nitric oxide synthase 1 (neuronal)nNOS2.7dimer provided a template for a model of the holo -nNOS enzyme assembly ( Garcin et al. 2004
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7The NOS model was built by connecting the dimeric NOSox modules and
7872NOS1nitric oxide synthase 1 (neuronal)NOS-peptide2.7built by connecting the dimeric NOSox modules and a CaM NOS-peptide complex ( Aoyagi et al. 2003 to the NOSred structure
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7The flexible hinge region in NOS would serve as the pivot point for this motion (
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7account for the slow rate of inter-module electron transfer in NOS
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7The dimerization NOS would provide a means for fine-tuning this electron transfer mechanism
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7Koedel and Pfister 1999 through the calcium-mediated activation of neuronal NOS ( Aoyagi et al. 2003
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7accentuated by NO used in signaling and by stimulation of NOS by calcium burst during invasion
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3Nucleotide excision repair (NER) NER differs from BER by responding to DNA helix distorting damage
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3Evidence for NER in the brain also includes studies on cerebellar extracts (
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.31998 and also a few rare hereditary diseases in known NER genes that cause marked neurological pathology which are discussed later
7230MRE11AMRE11 meiotic recombination 11 homolog A (S. cerevisiae)Mre112.3Double-Strand Breaks and Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1
9816RAD50RAD50 homolog (S. cerevisiae)Rad500.6Double-Strand Breaks and Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1
22948NLRP2NLR family, pyrin domain containing 2Nbs11.3Double-Strand Breaks and Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1
7230MRE11AMRE11 meiotic recombination 11 homolog A (S. cerevisiae)Mre112.3The Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1 (MRN) MRN protein complex plays a central role
9816RAD50RAD50 homolog (S. cerevisiae)Rad500.6The Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1 (MRN) MRN protein complex plays a central role in
22948NLRP2NLR family, pyrin domain containing 2Nbs11.3The Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1 (MRN) MRN protein complex plays a central role in repairing
7230MRE11AMRE11 meiotic recombination 11 homolog A (S. cerevisiae)Mre112.3Mutations in the Mre11 component give rise to ataxia-telangiectasia-like disorder (ATLD), ATLD with its
22948NLRP2NLR family, pyrin domain containing 2Nbs11.3Mutations in Nbs1 cause Nijmegen Breakage syndrome which displays similar symptoms to ATLD
795ATMataxia telangiectasia mutatedATM0.9processing events and to cell cycle checkpoint signaling through both ATM checkpoint kinase ( D'Amours and Jackson 2002 van den Bosch
4739H2AFXH2A histone family, member XH2AX1.6al. 2003 Assenmacher and Hopfner 2004 and global genome histone H2AX ( Paull et al. 2000
9816RAD50RAD50 homolog (S. cerevisiae)Rad500.6head of the complex possesses ATP-stimulated nuclease activity where the Rad50 ATPase controls the Mre11 nuclease
7230MRE11AMRE11 meiotic recombination 11 homolog A (S. cerevisiae)Mre112.3possesses ATP-stimulated nuclease activity where the Rad50 ATPase controls the Mre11 nuclease
22948NLRP2NLR family, pyrin domain containing 2Nbs11.3Nbs1 also appears to be part of the head through its
7230MRE11AMRE11 meiotic recombination 11 homolog A (S. cerevisiae)Mre112.3to be part of the head through its interactions with Mre11 ( Zhang et al. 2006
9816RAD50RAD50 homolog (S. cerevisiae)Rad500.6form an interlocked hook/Zinc/hook hook Zinc hook bridges joining two Rad50 coiled-coils ( Hopfner et al. 2002a
7230MRE11AMRE11 meiotic recombination 11 homolog A (S. cerevisiae)Mre112.3Double-Strand Breaks and Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1
9816RAD50RAD50 homolog (S. cerevisiae)Rad500.6Double-Strand Breaks and Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1
22948NLRP2NLR family, pyrin domain containing 2Nbs11.3Double-Strand Breaks and Mre11/Rad50/Nbs1 Mre11 Rad50 Nbs1
12791WRNWerner syndromeWRN3.5Double-Strand Breaks Base Excision Repair and WRN
12791WRNWerner syndromeWRN3.5Hereditary mutations in WRN are associated with Werner syndrome (WS), WS a rare autosomal
12791WRNWerner syndromeWRN3.5WRN encodes a 1 432-residue protein that contains a C-terminal nuclear-localization
12791WRNWerner syndromeWRN3.5WRN belongs to the RecQ helicase family that is widely distributed
9948RECQLRecQ protein-like (DNA helicase Q1-like)RecQ11.3human genome also contains four other RecQ helicase family members RecQ1 BLM RecQ4L and RecQ5
1058BLMBloom syndromeBLM1.6genome also contains four other RecQ helicase family members RecQ1 BLM RecQ4L and RecQ5
9950RECQL5RecQ protein-like 5RecQ51.3four other RecQ helicase family members RecQ1 BLM RecQ4L and RecQ5
1058BLMBloom syndromeBLM1.6Mutations in BLM and RecQ4L cause Bloom syndrome and Rothmund-Thomson syndrome respectively (
12791WRNWerner syndromeWRN3.5WRN has been implicated to function in multiple DNA metabolism steps
12791WRNWerner syndromeWRN3.5Biochemical characterization of WRN helicase has shown ATPase activity and unwinding of partial-duplex DNA
12791WRNWerner syndromeWRN3.5Significantly a unique feature of WRN among all the human RecQ helicases is the addition of
12791WRNWerner syndromeWRN3.5WRN exonuclease functions on a variety of structured DNA substrates that
12791WRNWerner syndromeWRN3.5WRN 3_amp_#x02032 -5_amp_#x02032 exonuclease activity shows substrate specificity similar to that
12791WRNWerner syndromeWRN3.5similar to that for the helicase suggesting that the two WRN enzymatic activities may have coordinated functions on several classes of
12791WRNWerner syndromeWRN3.5WRN has been implicated in certain DNA repair events as WS
12791WRNWerner syndromeWRN3.5WRN links to BER include physical and functional interaction with pol_amp_#x003b2
10289RPA1replication protein A1, 70kDaRPA0.6pol_amp_#x003b4 ( Szekely et al. 2000 replication protein A (RPA)( RPA Brosh et al. 1999 flap endonuclease 1 (FEN-1) FEN-1 (
3650FEN1flap structure-specific endonuclease 1FEN-11.9(RPA)( RPA Brosh et al. 1999 flap endonuclease 1 (FEN-1) FEN-1 ( Brosh et al. 2001b PCNA ( Lebel et al.
8729PCNAproliferating cell nuclear antigenPCNA0.9flap endonuclease 1 (FEN-1) FEN-1 ( Brosh et al. 2001b PCNA ( Lebel et al. 1999 and poly(ADP-ribose)polymerase poly ADP-ribose polymerase
270PARP1poly (ADP-ribose) polymerase family, member 1PARP-13.4et al. 1999 and poly(ADP-ribose)polymerase poly ADP-ribose polymerase 1 (PARP-1) PARP-1 ( von Kobbe et al. 2003a
9824RAD52RAD52 homolog (S. cerevisiae)Rad520.6with the MRN complex ( Cheng et al. 2004 and Rad52 ( Baynton et al. 2003 and by colocalization with Rad51
9817RAD51RAD51 homolog (RecA homolog, E. coli) (S. cerevisiae)Rad511.6Rad52 ( Baynton et al. 2003 and by colocalization with Rad51 in camptothecin-treated cells ( Sakamoto et al. 2001
12791WRNWerner syndromeWRN3.5to the NHEJ pathway is indicated by in interactions of WRN with the NHEJ-essential protein kinase DNA-PK ( Yannone et al.
9413PRKDCprotein kinase, DNA-activated, catalytic polypeptideDNA-PK1.2by in interactions of WRN with the NHEJ-essential protein kinase DNA-PK ( Yannone et al. 2001 Karmakar et al. 2002a Li
12791WRNWerner syndromeWRN3.5WRN activity is regulated by holo _amp_#x02013 DNA-PK ( Yannone et
9413PRKDCprotein kinase, DNA-activated, catalytic polypeptideDNA-PK1.2WRN activity is regulated by holo _amp_#x02013 DNA-PK ( Yannone et al. 2001 Karmakar et al. 2002a WRN
12791WRNWerner syndromeWRN3.5DNA-PK ( Yannone et al. 2001 Karmakar et al. 2002a WRN is an in vivo substrate of DNA-PK ( Yannone et
9413PRKDCprotein kinase, DNA-activated, catalytic polypeptideDNA-PK1.2et al. 2002a WRN is an in vivo substrate of DNA-PK ( Yannone et al. 2001 Karmakar et al. 2002a and
9413PRKDCprotein kinase, DNA-activated, catalytic polypeptideDNA-PK1.2Yannone et al. 2001 Karmakar et al. 2002a and the DNA-PK subunit Ku70/80 Ku70 80 stimulates WRN exonuclease activity in vitro
4055XRCC6X-ray repair complementing defective repair in Chinese hamster cells 6 (Ku autoantigen, 70kDa)Ku701.62001 Karmakar et al. 2002a and the DNA-PK subunit Ku70/80 Ku70 80 stimulates WRN exonuclease activity in vitro ( Cooper et
12791WRNWerner syndromeWRN3.5al. 2002a and the DNA-PK subunit Ku70/80 Ku70 80 stimulates WRN exonuclease activity in vitro ( Cooper et al. 2000 Li
12791WRNWerner syndromeWRN3.5Furthermore WRN has been observed in an endogenous complex with the Ku70/80
4055XRCC6X-ray repair complementing defective repair in Chinese hamster cells 6 (Ku autoantigen, 70kDa)Ku701.6has been observed in an endogenous complex with the Ku70/80 Ku70 80 subunit and poly(ADP-ribose) poly ADP-ribose polymerase-1 (PARP-1) PARP-1 (
270PARP1poly (ADP-ribose) polymerase family, member 1PARP-13.4Ku70/80 Ku70 80 subunit and poly(ADP-ribose) poly ADP-ribose polymerase-1 (PARP-1) PARP-1 ( Li et al. 2004
270PARP1poly (ADP-ribose) polymerase family, member 1PARP-13.4Notably PARP-1 binds sites of SSBs and DSBs and is also implicated
12791WRNWerner syndromeWRN3.5WRN has a modular composition ( Fig 6a and structural studies
12791WRNWerner syndromeWRN3.5protein's domains and those of homologues are helping to define WRN mediated functions ( Killoran and Keck 2006
12791WRNWerner syndromeWRN3.5The N-terminus of WRN contains the exonuclease domain the central core contains the helicase
12791WRNWerner syndromeWRN3.5Crystallographic and structure based mutational studies on the WRN exonuclease domain have revealed a high degree of structural and
12791WRNWerner syndromeWRN3.5These structural biochemistry studies on WRN exonuclease revealed a two metal ion mediated mechanism of nucleotide
12791WRNWerner syndromeWRN3.5The lanthanide Eu 3 ions inhibit the WRN exonuclease activity probably due to either a greater charge state
4055XRCC6X-ray repair complementing defective repair in Chinese hamster cells 6 (Ku autoantigen, 70kDa)Ku701.6Ku70/80 Ku70 80 specifically stimulates this WRN exonuclease activity but inhibits the
12791WRNWerner syndromeWRN3.5Ku70/80 Ku70 80 specifically stimulates this WRN exonuclease activity but inhibits the Klenow fragment exonuclease its closest
12791WRNWerner syndromeWRN3.5This also suggests that the WRN exonuclease domain may help impart functions mediated by WRN_amp_#x02013;Ku70/80 WRN_amp_#x02013
4055XRCC6X-ray repair complementing defective repair in Chinese hamster cells 6 (Ku autoantigen, 70kDa)Ku701.6exonuclease domain may help impart functions mediated by WRN_amp_#x02013;Ku70/80 WRN_amp_#x02013 Ku70 80
12791WRNWerner syndromeWRN3.5Additionally WRN exonuclease activity is required to fully compliment a Werner syndrome
12791WRNWerner syndromeWRN3.5specific cellular pathway but the elevated microhomology-mediated repair observed in WRN exonuclease deficient cells is similar to the phenotypes associated with
12791WRNWerner syndromeWRN3.5Melek et al. 1998 Verkaik et al. 2002 possibly linking WRN to this pathway
12791WRNWerner syndromeWRN3.5Werner syndrome cells have mild radiation sensitivity which rules out WRN as an essential DSB repair protein but WRN exonuclease may
12791WRNWerner syndromeWRN3.5rules out WRN as an essential DSB repair protein but WRN exonuclease may nevertheless be used for resolution of a limited
12791WRNWerner syndromeWRN3.5Double-Strand Breaks Base Excision Repair and WRN
12791WRNWerner syndromeWRN3.5This substantial functional divergence between WRN exonuclease and its structural homologs such as Klenow fragment exonuclease
12791WRNWerner syndromeWRN3.5The WRN exonuclease domain construct that was defined by crystallography studies is
12791WRNWerner syndromeWRN3.5However a similar WRN exonuclease construct forms homo-hexamers upon interaction with DNA or PCNA
8729PCNAproliferating cell nuclear antigenPCNA0.9WRN exonuclease construct forms homo-hexamers upon interaction with DNA or PCNA ( Xue et al. 2002
12791WRNWerner syndromeWRN3.5Also a larger WRN N-terminal construct residues 1-333 and containing the exonuclease domain forms
12791WRNWerner syndromeWRN3.5potentially affects substrate specificities and enzymatic activities of the full-length WRN protein
12791WRNWerner syndromeWRN3.5The multimerization state of WRN homologues is still under debate ( Sharma et al. 2006
1058BLMBloom syndromeBLM1.6debate ( Sharma et al. 2006 but the human homolog BLM has been observed to form hexameric and/or and or tetrameric
12791WRNWerner syndromeWRN3.5A WRN exonuclease hexameric ring model ( Fig 6c has been built
12791WRNWerner syndromeWRN3.5This WRN exonuclease ring contains a positively charged central cavity with the
12791WRNWerner syndromeWRN3.5Important insights into the molecular mechanisms of WRN have also been discovered from the structure of the conserved
12950SF1splicing factor 1SF10.3al. 2003 ( Fig 6e and this is similar to SF1 _amp_#x00026 2 helicases
12791WRNWerner syndromeWRN3.5In WRN a mutation in Motif I in mice induces a Werner
12950SF1splicing factor 1SF10.3still undefined but the lobes likely use strategies similar to SF1 _amp_#x00026 2 proteins
12950SF1splicing factor 1SF10.3Wang et al. 2000 and regions of sequence similarity to SF1 indicates that WRN helicase may function a base-flipping mechanism proposed
12791WRNWerner syndromeWRN3.52000 and regions of sequence similarity to SF1 indicates that WRN helicase may function a base-flipping mechanism proposed in SF1 despite
12950SF1splicing factor 1SF10.3that WRN helicase may function a base-flipping mechanism proposed in SF1 despite overall sequence similarity to SF2 helicases ( Bernstein et
10780SFRS1splicing factor, arginine/serine-rich 1 (splicing factor 2, alternate splicing factor)SF20.3base-flipping mechanism proposed in SF1 despite overall sequence similarity to SF2 helicases ( Bernstein et al. 2003
1058BLMBloom syndromeBLM1.6and are sufficient to cause Bloom syndrome when mutated in BLM ( Ellis et al. 1995
12791WRNWerner syndromeWRN3.5a more recently determined NMR structure of this domain in WRN ( Hu et al. 2005 ( Fig 6g
12791WRNWerner syndromeWRN3.5This domain in WRN binds several alternate DNA substructures including forks holding junctions 3_amp_#x02032
12791WRNWerner syndromeWRN3.5Notably the WRN winged helix domain facilitates targeting of WRN to the nucleolus
12791WRNWerner syndromeWRN3.5Notably the WRN winged helix domain facilitates targeting of WRN to the nucleolus ( von Kobbe and Bohr 2002 and
12791WRNWerner syndromeWRN3.5and interactions of several of the potential protein partners of WRN have also been specifically mapped to this winged helix domain
12791WRNWerner syndromeWRN3.5indicating the critical and versatile nature of this domain in WRN
12791WRNWerner syndromeWRN3.5The remaining C-terminal domain of WRN is the HRDC ( H elicase R Nase D C
12791WRNWerner syndromeWRN3.5In WRN the HRDC domain preferentially binds to forked duplex DNA and
12791WRNWerner syndromeWRN3.5this domain is utilized in replication and recombination functions of WRN
12791WRNWerner syndromeWRN3.5Significantly the interactions with the WRN C-terminus containing the winged helix and HRDC domains have been
12791WRNWerner syndromeWRN3.5HRDC domains have been indicated to regulate the activity of WRN or of the partner protein
12791WRNWerner syndromeWRN3.5The WRN exonuclease domain activity is regulated through the interaction of its
11998TP53tumor protein p53p530.6activity is regulated through the interaction of its C-terminus with p53 ( Blander et al. 1999 Ku70/80 Ku70 80 ( Cooper
4055XRCC6X-ray repair complementing defective repair in Chinese hamster cells 6 (Ku autoantigen, 70kDa)Ku701.6its C-terminus with p53 ( Blander et al. 1999 Ku70/80 Ku70 80 ( Cooper et al. 2000 Li and Comai 2000
270PARP1poly (ADP-ribose) polymerase family, member 1PARP-13.42000 Brosh et al. 2001a Karmakar et al. 2002b and PARP-1 ( von Kobbe et al. 2004
12791WRNWerner syndromeWRN3.5While WRN helicase activity is regulated by C-terminal interactions that include TRF2
11729TERF2telomeric repeat binding factor 2TRF21.6WRN helicase activity is regulated by C-terminal interactions that include TRF2 ( Opresko et al. 2002 Rad52 ( Baynton et al.
9824RAD52RAD52 homolog (S. cerevisiae)Rad520.6C-terminal interactions that include TRF2 ( Opresko et al. 2002 Rad52 ( Baynton et al. 2003 and PARP-1 ( von Kobbe
270PARP1poly (ADP-ribose) polymerase family, member 1PARP-13.4et al. 2002 Rad52 ( Baynton et al. 2003 and PARP-1 ( von Kobbe et al. 2004
12791WRNWerner syndromeWRN3.5An example of WRN stimulation of partner proteins includes the FEN-1 partner protein whose
3650FEN1flap structure-specific endonuclease 1FEN-11.9An example of WRN stimulation of partner proteins includes the FEN-1 partner protein whose structures with DNA and PCNA have been
8729PCNAproliferating cell nuclear antigenPCNA0.9includes the FEN-1 partner protein whose structures with DNA and PCNA have been defined ( Hosfield et al. 1998 Chapados et
12791WRNWerner syndromeWRN3.5WRN interaction that was mapped to the winged helix domain stimulates
3650FEN1flap structure-specific endonuclease 1FEN-11.9interaction that was mapped to the winged helix domain stimulates FEN-1 nucleolytic activity by more than 80-fold ( Brosh et al.
12791WRNWerner syndromeWRN3.5interesting to define how these interactions are able to regulate WRN catalytic activities how key DNA and/or and or protein interactions
12791WRNWerner syndromeWRN3.5or protein interactions may potentially allow for controlled handoffs during WRN mediated pathway progression and how the breakdown of this pathway
12791WRNWerner syndromeWRN3.5breakdown of this pathway progression in the absence of functioning WRN gives rise to the disease phenotype
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3NER and the XPB helicase
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4NER and the XPB helicase
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3NER functions to restore short segments of nucleotides containing DNA helix
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3generated by ionizing radiation can produce DNA lesions that require NER for repair ( Satoh et al. 1993
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3NER is a particularly versatile DNA repair system that is capable
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3Hereditary mutations in NER genes clearly demonstrate that the inherited DNA repair potential has
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3Moreover much of our understanding of NER has been derived from studies on cells from individuals with
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3has been derived from studies on cells from individuals with NER defects that present clinical phenotypes
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4gene that is associated with all three disorders is the XPB helicase ( Weeda et al. 1997 which is part of
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)TFIIH2.7al. 1997 which is part of the general transcription factor TFIIH complex ( Schaeffer et al. 1993
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4The XPB ATPase and helicase activities are essential for promoter DNA melting
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4In addition to these transcriptional functions XPB also plays a role in NER
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3to these transcriptional functions XPB also plays a role in NER
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Recent developments in structural and biochemical characterization of XPB helicase have begun to address some of the key questions
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4of the key questions on the underlying mechanisms of how XPB and TFIIH function in both transcription and NER ( Coin
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)TFIIH2.7key questions on the underlying mechanisms of how XPB and TFIIH function in both transcription and NER ( Coin et al.
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3of how XPB and TFIIH function in both transcription and NER ( Coin et al. 2004 Coin et al. 2006 Fan
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4studies have been conducted on a homolog of the human XPB the archea Archaeoglobus fulgidus XPB ( Af XPB ( Fan
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4a homolog of the human XPB the archea Archaeoglobus fulgidus XPB ( Af XPB ( Fan et al. 2006a
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4the human XPB the archea Archaeoglobus fulgidus XPB ( Af XPB ( Fan et al. 2006a
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Af XPB shares 42% amino acid sequence similarity with the central region
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4amino acid sequence similarity with the central region of human XPB suggesting that the core XPB structure is conserved
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4the central region of human XPB suggesting that the core XPB structure is conserved
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4As indicated by sequence comparison the Af XPB structure contains two RecA-like helicase domains (HD1 HD1 and HD2
9817RAD51RAD51 homolog (RecA homolog, E. coli) (S. cerevisiae)RecA-like1.6indicated by sequence comparison the Af XPB structure contains two RecA-like helicase domains (HD1 HD1 and HD2 that belong to helicase
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4However several other functional regions in XPB were discovered that were not predicted either through sequence analysis
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4This domain in Af XPB has been demonstrated to interact with some types of damaged
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4XPB DRD differs from the MutS domain by lacking a critical
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Instead Af XPB DRD likely recognizes distortions in the DNA typically caused by
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3in the DNA typically caused by the broad spectrum of NER lesions
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3is located and linked to initiation of DNA unwinding during NER steps by XPB/TFIIH XPB TFIIH
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4to initiation of DNA unwinding during NER steps by XPB/TFIIH XPB TFIIH
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)TFIIH2.7initiation of DNA unwinding during NER steps by XPB/TFIIH XPB TFIIH
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB-family2.4Also present is a highly conserved XPB-family specific RED amino acid motif located in domain HD1 (
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Mutational analysis suggests that this XPB RED motif has a critical role in DNA unwinding function
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3NER and the XPB helicase
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4NER and the XPB helicase
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Af XPB seems to follow this general trend
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4helicase domains HD1 and HD2 observed in the full-length Af XPB is different than the _amp_#x0201c closed_amp_#x0201d conformation observed in crystal
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4also lead to a proposed mechanism for the involvement of XPB in the unwinding of duplex DNA at sites of DNA
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4When XPB is recruited to DNA the DRD domain is proposed to
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4helicase domain HD2 via a rotation of ~170_amp_#x000b0 and allows XPB to wrap around the DNA
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4such a conformational change may result from interaction of the XPB C-terminus (including including ThM and HD2 domains with 3'-overhanging DNA
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4_amp_#x0201c wedge_amp_#x0201d to unzip the DNA when ATP hydrolysis drives XPB to move along the duplex DNA during NER
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3hydrolysis drives XPB to move along the duplex DNA during NER
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4However it is noticed that DNA melting by XPB during transcription initiation is possibly mediated through an unconventional helicase
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4unconventional helicase mechanism ( Kim et al. 2000 in which XPB functions as a molecular _amp_#x0201c wrench_amp_#x0201d rotating downstream DNA relative
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Therefore the conformation observed in the Af XPB structure may represent a _amp_#x0201c transcriptional mode_amp_#x0201d of XPB tuned
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Af XPB structure may represent a _amp_#x0201c transcriptional mode_amp_#x0201d of XPB tuned for this action whereas the domain reorientation described above
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER-specific0.3for this action whereas the domain reorientation described above is NER-specific and only occurs upon the interactions of the DRD with
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4If these mechanisms are true the conformation of XPB will decide whether TFIIH functions as a transcription factor or
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)TFIIH2.7mechanisms are true the conformation of XPB will decide whether TFIIH functions as a transcription factor or a DNA repair factor
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4In other words XPB acts as a master key helping TFIIH switch pathway selection
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)TFIIH2.7In other words XPB acts as a master key helping TFIIH switch pathway selection for transcription or DNA repair whenever it
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3NER and the XPB helicase
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4NER and the XPB helicase
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Defining the Af XPB structural biochemistry has uncovered some unexpected structural motifs and functions
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4biochemistry has uncovered some unexpected structural motifs and functions for XPB
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4However Af XPB only correlates to the central region of human XPB
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Af XPB only correlates to the central region of human XPB
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4exclusively occur in the N- and C-terminal extensions of human XPB suggesting that mutation to the conserved XPB central region is
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4extensions of human XPB suggesting that mutation to the conserved XPB central region is lethal
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Af XPB reflects the basic structure and function of XPB helicases
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Af XPB reflects the basic structure and function of XPB helicases
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4However the extensions to the human XPB are likely to contribute to a greater level of complexity
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4Phosphorylation of residue S751 at the C-terminal extension of human XPB was reported to regulate TFIIH activity in NER reactions (
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)TFIIH2.7the C-terminal extension of human XPB was reported to regulate TFIIH activity in NER reactions ( Coin et al. 2004
7965NR1H2nuclear receptor subfamily 1, group H, member 2NER1.3of human XPB was reported to regulate TFIIH activity in NER reactions ( Coin et al. 2004
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4The physical and functional interactions between XPB and other proteins within and outside of the TFIIH complex
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)TFIIH2.7between XPB and other proteins within and outside of the TFIIH complex have been investigated recently ( Jawhari et al. 2002
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)TFIIH2.7occur in the extensions and have profound effects on the TFIIH activities in transcription or DNA repair
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)XPB2.4that future studies will similarly uncover new functions for human XPB
3435ERCC3excision repair cross-complementing rodent repair deficiency, complementation group 3 (xeroderma pigmentosum group B complementing)TFIIH2.7features highlighted above will fit into the ring-structure of human TFIIH complex ( Chang and Kornberg 2000 Schultz et al. 2000
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7significant example is the fine control of activities of the NOS holo-enzyme suggested to occur through either promoting or inhibiting a
9817RAD51RAD51 homolog (RecA homolog, E. coli) (S. cerevisiae)Rad511.6A significant example of protein interface mimicry occurs in Rad51 filament formation which is central to HRR steps
9817RAD51RAD51 homolog (RecA homolog, E. coli) (S. cerevisiae)Rad511.6that filament formation occurs by the sequential binding of adjacent Rad51 monomers mimicking a BRC repeat
1101BRCA2breast cancer 2, early onsetBRCA20.8This BRC repeat is normally found in the BRCA2 partner that mediates critical functions of Rad51 ( Pellegrini et
9817RAD51RAD51 homolog (RecA homolog, E. coli) (S. cerevisiae)Rad511.6found in the BRCA2 partner that mediates critical functions of Rad51 ( Pellegrini et al. 2002 Shin et al. 2003
12791WRNWerner syndromeWRN3.5This includes MRN complex or the WRN RecQ helicase which may prove to be suitable targets for
7872NOS1nitric oxide synthase 1 (neuronal)NOS2.7The NOS isoforms also have multiple functions that may be targets for
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))superoxide dismutase1.0mutations in a superoxide dismutase which removes oxygen free radicals may cause the neurodegenerative disease amyotrophic lateral sclerosis.
12791WRNWerner syndromewerner syndrome1.0additionally dna repair disorders that affect the brain to varying extents include ataxia telangiectasia like disorder cockayne syndrome or werner syndrome.
12791WRNWerner syndromewerner syndrome1.0keywords: amyotrophic lateral sclerosis ataxia telangiectasia like disorder werner syndrome xeroderma pigmentosum nitric oxide synthase superoxide dismutase
12814XPAxeroderma pigmentosum, complementation group Axeroderma pigmentosum1.0keywords: amyotrophic lateral sclerosis ataxia telangiectasia like disorder werner syndrome xeroderma pigmentosum nitric oxide synthase superoxide dismutase
7873NOS2Anitric oxide synthase 2A (inducible, hepatocytes)nitric oxide synthase1.0keywords: amyotrophic lateral sclerosis ataxia telangiectasia like disorder werner syndrome xeroderma pigmentosum nitric oxide synthase superoxide dismutase
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))superoxide dismutase1.0keywords: amyotrophic lateral sclerosis ataxia telangiectasia like disorder werner syndrome xeroderma pigmentosum nitric oxide synthase superoxide dismutase
12791WRNWerner syndromewerner syndrome1.0severe neurodegeneration is clearly apparent in some disorders such as cockayne syndrome lehmann 2003 while more aging related phenotypes are present in others including werner syndrome goto 1997 .
7872NOS1nitric oxide synthase 1 (neuronal)neuronal nitric oxide synthase1.0tion repair hrdc helicase rnase d conserved domain mmr mismatch repair mrn mre11/rad50/nbs1 mtdna mitochondrial dna ner nucleotide excision repair no nitric oxide e i or nnos endothelial inducible or neuronal nitric oxide synthase nosox nos catalytic oxygenase module nosred nos reductase module nhej nonhomologous end joining ros reactive oxygen species sod superoxide dismutase ssbs single strand breaks tc ner transcription cou
12791WRNWerner syndromewerner syndrome1.0omologous end joining ros reactive oxygen species sod superoxide dismutase ssbs single strand breaks tc ner transcription coupled nucleotide excision repair thm thumb domain ttd trichothiodystropy ws werner syndrome xp xeroderma pigmentosum
12814XPAxeroderma pigmentosum, complementation group Axeroderma pigmentosum1.0ng ros reactive oxygen species sod superoxide dismutase ssbs single strand breaks tc ner transcription coupled nucleotide excision repair thm thumb domain ttd trichothiodystropy ws werner syndrome xp xeroderma pigmentosum
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))superoxide dismutase1.0ide e i or nnos endothelial inducible or neuronal nitric oxide synthase nosox nos catalytic oxygenase module nosred nos reductase module nhej nonhomologous end joining ros reactive oxygen species sod superoxide dismutase ssbs single strand breaks tc ner transcription coupled nucleotide excision repair thm thumb domain ttd trichothiodystropy ws werner syndrome xp xeroderma pigmentosum
11180SOD2superoxide dismutase 2, mitochondrialmanganese superoxide dismutase1.0ros removal by manganese superoxide dismutase
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))superoxide dismutase1.0most of these free radicals are rapidly scavenged in the cell by the superoxide dismutase sod enzymes.
11180SOD2superoxide dismutase 2, mitochondrialmanganese superoxide dismutase1.0ros removal by manganese superoxide dismutase
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))superoxide dismutase1.0ros and copper zinc superoxide dismutase
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))superoxide dismutase11.0however mutations in the superoxide dismutase1 sod1 gene give rise to approximately 20% of fals cases deng et al. 1993 rosen et al. 1993 rakhit et al. 2002 while mutations in several other genes including als2 setx or vapb cause much rarer forms
11179SOD1superoxide dismutase 1, soluble (amyotrophic lateral sclerosis 1 (adult))superoxide dismutase1.0sod1 encodes a cytosolic copper zinc superoxide dismutase cu zn sod which similar to the mitochondrial mnsod is responsible for the disproportionation of harmful superoxide radicals to hydrogen peroxide and oxygen fridovich 1986 .
7873NOS2Anitric oxide synthase 2A (inducible, hepatocytes)nitric oxide synthase1.0cu zn sod with essential cellular components bruijn et al. 1998 johnston et al. 2000 cleveland and rothstein 2001 and this has been demonstrated with the copper chaperone for sod ccs kato et al. 2001 nitric oxide synthase nos and phosphorylated neurofilaments chou et al. 1996 .
1516CATcatalasecatalase1.0the catalase protein completes the process of eliminating ros by converting hydrogen peroxide into water and oxygen.
1516CATcatalasecatalase1.0in addition to this defense against oxidative damage human catalase has roles in ethanol metabolism zimatkin et al. 1998 inflammation halliwell and gutteridge 1984 apoptosis yabuki et al. 1999 aging and cancer miyamoto et al. 1996 .
1516CATcatalasecatalase1.0several catalase crystal structures have been determined aiding our understanding of reactive oxygen control by defining the reaction and inhibition mechanisms goth 1997 .
1516CATcatalasecatalase1.0these studies include the definition of the chemistry of the human catalase through structures of the resting state enzyme and complexes of a catalase bound to cyanide and 3at inhibitors putnam et al. 2000 .
1516CATcatalasecatalase1.0human catalase forms a tetrameric assembly and this may be important to ensure that the active site is sequestered and that the enzyme is competent to complete the reaction.
1516CATcatalasecatalase1.0interestingly an unstable catalase isolated from patients homozygous for a swiss type acatalasemia a hereditary catalase deficiency disorder rapidly disassociates into inactive dimers with reduced heme content.
1516CATcatalasecatalase1.0this suggests that catalase assembly variants may play roles in disease susceptibility aebi et al. 1974 in addition to nonsense and splicing mutations hirono et al. 1995 .
1516CATcatalasecatalase1.0from the structural data a mechanism for the recognition and removal of peroxide by catalase has been proposed putnam et al. 2000 .
1516CATcatalasecatalase1.0catalase uses these two asymmetric interactions with the substrate to prime the otherwise symmetric peroxide bond for heterolytic bond cleavage; good geometry for both iron coordination and hydrogen bond form
7873NOS2Anitric oxide synthase 2A (inducible, hepatocytes)nitric oxide synthase1.0ros and nitric oxide synthase
7873NOS2Anitric oxide synthase 2A (inducible, hepatocytes)nitric oxide synthase1.0no is a small easily diffusible and transient free radical whose availability is controlled at the synthesis level by the nitric oxide synthase nos enzymes.
9208PORP450 (cytochrome) oxidoreductasenadph dependent cytochrome p450 reductase1.0nosred belongs to a large protein family including nadph dependent cytochrome p450 reductase and sulfite reductase flavoprotein.
9208PORP450 (cytochrome) oxidoreductasecytochrome p450 reductase1.0nosred belongs to a large protein family including nadph dependent cytochrome p450 reductase and sulfite reductase flavoprotein.
7873NOS2Anitric oxide synthase 2A (inducible, hepatocytes)nitric oxide synthase1.0ros and nitric oxide synthase
11609TBXAS1thromboxane A synthase 1 (platelet, cytochrome P450, family 5, subfamily A)cytochrome p4501.0this model is consistent with the proposed role of the same region in the structurally related cytochrome p450 bm3 sevrioukova et al. 1999 and reminiscent of those found in multiple redox centers containing proteins zhang et al. 1998 lennon et al. 2000 leys et al. 2003 .
7873NOS2Anitric oxide synthase 2A (inducible, hepatocytes)nitric oxide synthase1.0ros and nitric oxide synthase
12791WRNWerner syndromewerner syndrome1.0hereditary mutations in wrn are associated with werner syndrome ws a rare autosomal recessive disorder that gives rise to multiple progeroid pathologies including osteoporosis atherosclerosis and a greatly increased cancer incidence goto 1997 .
1058BLMBloom syndromebloom syndrome1.0mutations in blm and recq4l cause bloom syndrome and rothmund thomson syndrome respectively harrigan et al. 2003 .
23696TIPARPTCDD-inducible poly(ADP-ribose) polymeraseparp 11.0rigan et al. 2003 pol_amp_#x003b4; szekely et al. 2000 replication protein a rpa brosh et al. 1999 flap endonuclease 1 fen 1 brosh et al. 2001b pcna lebel et al. 1999 and poly adp ribose polymerase 1 parp 1 von kobbe et al. 2003a .
3650FEN1flap structure-specific endonuclease 1fen 11.0inks to ber include physical and functional interaction with pol_amp_#x003b2; harrigan et al. 2003 pol_amp_#x003b4; szekely et al. 2000 replication protein a rpa brosh et al. 1999 flap endonuclease 1 fen 1 brosh et al. 2001b pcna lebel et al. 1999 and poly adp ribose polymerase 1 parp 1 von kobbe et al. 2003a .
270PARP1poly (ADP-ribose) polymerase family, member 1poly adp ribose polymerase1.0ion with pol_amp_#x003b2; harrigan et al. 2003 pol_amp_#x003b4; szekely et al. 2000 replication protein a rpa brosh et al. 1999 flap endonuclease 1 fen 1 brosh et al. 2001b pcna lebel et al. 1999 and poly adp ribose polymerase 1 parp 1 von kobbe et al. 2003a .
270PARP1poly (ADP-ribose) polymerase family, member 1poly adp ribose polymerase 11.0ion with pol_amp_#x003b2; harrigan et al. 2003 pol_amp_#x003b4; szekely et al. 2000 replication protein a rpa brosh et al. 1999 flap endonuclease 1 fen 1 brosh et al. 2001b pcna lebel et al. 1999 and poly adp ribose polymerase 1 parp 1 von kobbe et al. 2003a .
23696TIPARPTCDD-inducible poly(ADP-ribose) polymeraseparp 11.0furthermore wrn has been observed in an endogenous complex with the ku70/80 subunit and poly adp ribose polymerase 1 parp 1 li et al. 2004 .
270PARP1poly (ADP-ribose) polymerase family, member 1poly adp ribose polymerase1.0furthermore wrn has been observed in an endogenous complex with the ku70/80 subunit and poly adp ribose polymerase 1 parp 1 li et al. 2004 .
270PARP1poly (ADP-ribose) polymerase family, member 1poly adp ribose polymerase 11.0furthermore wrn has been observed in an endogenous complex with the ku70/80 subunit and poly adp ribose polymerase 1 parp 1 li et al. 2004 .
23696TIPARPTCDD-inducible poly(ADP-ribose) polymeraseparp 11.0notably parp 1 binds sites of ssbs and dsbs and is also implicated in the control of genomic integrity and mammalian life span burkle et al. 2005 .
12791WRNWerner syndromewerner syndrome1.0additionally wrn exonuclease activity is required to fully compliment a werner syndrome dna end joining phenotype in an in vivo plasmid based assay perry et al. 2006 .
12791WRNWerner syndromewerner syndrome1.0however werner syndrome cells have mild radiation sensitivity which rules out wrn as an essential dsb repair protein but wrn exonuclease may nevertheless be used for resolution of a limited class of dsbs.
7983NR5A1nuclear receptor subfamily 5, group A, member 1sf 11.0the two n terminal domains are helicase lobes that share structural similar to superfamily sf 1 and 2 helicases but have some features unique to the recq family.
1058BLMBloom syndromebloom syndrome1.0the cysteine side chains are conserved in the recq family and mutations in these residues disrupt recq helicase function and are sufficient to cause bloom syndrome when mutated in blm ellis et al. 1995 .
23696TIPARPTCDD-inducible poly(ADP-ribose) polymeraseparp 11.0onuclease domain activity is regulated through the interaction of its c terminus with p53 blander et al. 1999 ku70/80 cooper et al. 2000 li and comai 2000 brosh et al. 2001a karmakar et al. 2002b and parp 1 von kobbe et al. 2004 .
23696TIPARPTCDD-inducible poly(ADP-ribose) polymeraseparp 11.0while wrn helicase activity is regulated by c terminal interactions that include trf2 opresko et al. 2002 rad52 baynton et al. 2003 and parp 1 von kobbe et al. 2004 .
3650FEN1flap structure-specific endonuclease 1fen 11.0an example of wrn stimulation of partner proteins includes the fen 1 partner protein whose structures with dna and pcna have been defined hosfield et al. 1998 chapados et al. 2004 .
3650FEN1flap structure-specific endonuclease 1fen 11.0wrn interaction that was mapped to the winged helix domain stimulates fen 1 nucleolytic activity by more than 80 fold brosh et al. 2001b .
12814XPAxeroderma pigmentosum, complementation group Axeroderma pigmentosum1.0this includes patients with the rare genetic disorders xeroderma pigmentosum xp trichothiodystrophy ttd and cockayne syndrome cs .
9122PMS2PMS2 postmeiotic segregation increased 2 (S. cerevisiae)dna mismatch repair1.0a small n terminal domain is attached to helicase domain hd1 fig 7 which shares structural similarity to the mismatch recognition domain of the dna mismatch repair protein muts obmolova et al. 2000 .