Summary: 8-oxoguanine DNA glycosylase, N-terminal domain
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This is the Wikipedia entry entitled "Oxoguanine glycosylase". More...
Oxoguanine glycosylase Edit Wikipedia article
| 8-oxoguanine DNA glycosylase, N-terminal domain | |||||||||
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| structure of catalytically inactive q315a human 8-oxoguanine glycosylase complexed to 8-oxoguanine dna | |||||||||
| Identifiers | |||||||||
| Symbol | OGG_N | ||||||||
| Pfam | PF07934 | ||||||||
| Pfam clan | CL0407 | ||||||||
| InterPro | IPR012904 | ||||||||
| SCOP | 1ebm | ||||||||
| SUPERFAMILY | 1ebm | ||||||||
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8-Oxoguanine glycosylase also known as OGG1 is a DNA glycosylase enzyme that, in humans, is encoded by the OGG1 gene. It is involved in base excision repair. It is found in bacterial, archaeal and eukaryotic species.
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[edit] Function
OGG1 is the primary enzyme responsible for the excision of 7,8-dihydro-8-oxoguanine (8-oxoG), a mutagenic base byproduct that occurs as a result of exposure to reactive oxygen species (ROS). OGG1 is a bifunctional glycosylase, as it is able to both cleave the glycosidic bond of the mutagenic lesion and cause a strand break in the DNA backbone. Alternative splicing of the C-terminal region of this gene classifies splice variants into two major groups, type 1 and type 2, depending on the last exon of the sequence. Type 1 alternative splice variants end with exon 7 and type 2 end with exon 8. All variants have the N-terminal region in common. Many alternative splice variants for this gene have been described, but the full-length nature for every variant has not been determined. In eukaryotes, the N-terminus of this gene contains a mitochondrial targeting signal, essential for mitochondrial localization.[1] A conserved N-terminal domain contributes residues to the 8-oxoguanine binding pocket. This domain is organised into a single copy of a TBP-like fold.[2]
Despite the presumed importance of this enzyme, mice lacking Ogg1 have been generated and found to have a normal lifespan,[3] and despite some early reports, do not show increased mutagenesis or cancer incidence.[citation needed][dubious ] Interestingly, mice lacking Ogg1 have been shown to be prone to increased body weight and obesity, as well as high-fat diet induced insulin resistance.[4] There is some controversy as to whether deletion of Ogg1 actually leads to increased 8-oxo-dG levels: the HPLC-EC assay suggests up to 6 fold higher levels of 8-oxo-dG in nuclear DNA and 20-fold higher in mitochondrial DNA whereas the fappy-glycosylase assay indicates no change.[citation needed]
[edit] Interactions
Oxoguanine glycosylase has been shown to interact with XRCC1[5] and PKC alpha.[6]
[edit] References
- ^ "Entrez Gene: OGG1 8-oxoguanine DNA glycosylase". http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=4968.
- ^ Bjoras M, Seeberg E, Luna L, Pearl LH, Barrett TE (March 2002). "Reciprocal "flipping" underlies substrate recognition and catalytic activation by the human 8-oxo-guanine DNA glycosylase". J. Mol. Biol. 317 (2): 171–7. doi:10.1006/jmbi.2002.5400. PMID 11902834.
- ^ Klungland A, Rosewell I, Hollenbach S, Larsen E, Daly G, Epe B, Seeberg E, Lindahl T, Barnes DE (November 1999). "Accumulation of premutagenic DNA lesions in mice defective in removal of oxidative base damage". Proc. Natl. Acad. Sci. U.S.A. 96 (23): 13300–5. doi:10.1073/pnas.96.23.13300. PMC 23942. PMID 10557315. //www.ncbi.nlm.nih.gov/pmc/articles/PMC23942/.
- ^ Sampath H, Vartanian V, Rollins MR, Sakumi K, Nakabeppu Y, Lloyd RS (December 2012). "8-Oxoguanine DNA glycosylase (OGG1) deficiency increases susceptibility to obesity and metabolic dysfunction". PLoS ONE 7 (12): e51697. doi:10.1371/journal.pone.0051697. PMC 3524114. PMID 23284747. //www.ncbi.nlm.nih.gov/pmc/articles/PMC3524114/.
- ^ Marsin S, Vidal AE, Sossou M, Ménissier-de Murcia J, Le Page F, Boiteux S, de Murcia G, Radicella JP (November 2003). "Role of XRCC1 in the coordination and stimulation of oxidative DNA damage repair initiated by the DNA glycosylase hOGG1". J. Biol. Chem. 278 (45): 44068–74. doi:10.1074/jbc.M306160200. PMID 12933815.
- ^ Dantzer F, Luna L, Bjørås M, Seeberg E (June 2002). "Human OGG1 undergoes serine phosphorylation and associates with the nuclear matrix and mitotic chromatin in vivo". Nucleic Acids Res. 30 (11): 2349–57. doi:10.1093/nar/30.11.2349. PMC 117190. PMID 12034821. //www.ncbi.nlm.nih.gov/pmc/articles/PMC117190/.
[edit] Further reading
- Boiteux S, Radicella JP (2000). "The human OGG1 gene: structure, functions, and its implication in the process of carcinogenesis.". Arch. Biochem. Biophys. 377 (1): 1–8. doi:10.1006/abbi.2000.1773. PMID 10775435.
- Park J, Chen L, Tockman MS et al. (2004). "The human 8-oxoguanine DNA N-glycosylase 1 (hOGG1) DNA repair enzyme and its association with lung cancer risk". Pharmacogenetics 14 (2): 103–9. doi:10.1097/00008571-200402000-00004. PMID 15077011.
- Hung RJ, Hall J, Brennan P, Boffetta P (2006). "Genetic polymorphisms in the base excision repair pathway and cancer risk: a HuGE review". Am. J. Epidemiol. 162 (10): 925–42. doi:10.1093/aje/kwi318. PMID 16221808.
- Mirbahai L, Kershaw RM, Green RM, Hayden RE, Meldrum RA, Hodges NJ. (2010). "Use of a molecular beacon to track the activity of base excision repair protein OGG1 in live cells". DNA Repair 9 (2): 144–152. doi:10.1016/j.dnarep.2009.11.009. PMID 20042377.
[edit] External links
- oxoguanine glycosylase 1, human at the US National Library of Medicine Medical Subject Headings (MeSH)
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This article incorporates text from the public domain Pfam and InterPro IPR012904
This page is based on a Wikipedia article. The text is available under the Creative Commons Attribution/Share-Alike License.
This tab holds the annotation information that is stored in the Pfam database. As we move to using Wikipedia as our main source of annotation, the contents of this tab will be gradually replaced by the Wikipedia tab.
8-oxoguanine DNA glycosylase, N-terminal domain Provide feedback
The presence of 8-oxoguanine residues in DNA can give rise to G-C to T-A transversion mutations. This enzyme is found in archaeal, bacterial and eukaryotic species, and is specifically responsible for the process which leads to the removal of 8-oxoguanine residues. It has DNA glycosylase activity ( EC:3.2.2.23) and DNA lyase activity ( EC:4.2.99.18) [1]. The region featured in this family is the N-terminal domain, which is organised into a single copy of a TBP-like fold. The domain contributes residues to the 8-oxoguanine binding pocket [2].
Literature references
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Bruner SD, Norman DP, Verdine GL; , Nature 2000;403:859-866.: Structural basis for recognition and repair of the endogenous mutagen 8-oxoguanine in DNA. PUBMED:10706276 EPMC:10706276
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Bjoras M, Seeberg E, Luna L, Pearl LH, Barrett TE; , J Mol Biol 2002;317:171-177.: Reciprocal "flipping" underlies substrate recognition and catalytic activation by the human 8-oxo-guanine DNA glycosylase. PUBMED:11902834 EPMC:11902834
External database links
| PANDIT: | PF07934 |
| Pseudofam: | PF07934 |
| SCOP: | 1ebm |
| SYSTERS: | OGG_N |
This tab holds annotation information from the InterPro database.
InterPro entry IPR012904
The presence of 8-oxoguanine residues in DNA can give rise to G-C to T-A transversion mutations. This enzyme is found in archaeal, bacterial and eukaryotic species, and is specifically responsible for the process which leads to the removal of 8-oxoguanine residues. It has DNA glycosylase activity (EC) and DNA lyase activity (EC) [PUBMED:10706276]. The region featured in this family is the N-terminal domain, which is organised into a single copy of a TBP-like fold. The domain contributes residues to the 8-oxoguanine binding pocket [PUBMED:11902834].
Gene Ontology
The mapping between Pfam and Gene Ontology is provided by InterPro. If you use this data please cite InterPro.
| Molecular function | damaged DNA binding (GO:0003684) |
| oxidized purine base lesion DNA N-glycosylase activity (GO:0008534) | |
| Biological process | nucleotide-excision repair (GO:0006289) |
Domain organisation
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Pfam Clan
Alignments
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| Seed (95) |
Full (767) |
Representative proteomes | NCBI (723) |
Meta (56) |
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| RP15 (121) |
RP35 (203) |
RP55 (278) |
RP75 (324) |
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| PP/heatmap | 1 | |||||||
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| Seed (95) |
Full (767) |
Representative proteomes | NCBI (723) |
Meta (56) |
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|---|---|---|---|---|---|---|---|---|
| RP15 (121) |
RP35 (203) |
RP55 (278) |
RP75 (324) |
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| Raw Stockholm | ||||||||
| Gzipped | ||||||||
You can also download a FASTA format file containing the full-length sequences for all sequences in the full alignment.
External links
MyHits provides a collection of tools to handle multiple sequence alignments. For example, one can refine a seed alignment (sequence addition or removal, re-alignment or manual edition) and then search databases for remote homologs using HMMER3.
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HMM logos is one way of visualising profile HMMs. Logos provide a quick overview of the properties of an HMM in a graphical form. You can see a more detailed description of HMM logos and find out how you can interpret them here. More...
Trees
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Curation and family details
This section shows the detailed information about the Pfam family. You can see the definitions of many of the terms in this section in the glossary and a fuller explanation of the scoring system that we use in the scores section of the help pages.
Curation
| Seed source: | Pfam-B_29151 (release 14.0) |
| Previous IDs: | none |
| Type: | Family |
| Author: | Fenech M |
| Number in seed: | 95 |
| Number in full: | 767 |
| Average length of the domain: | 113.40 aa |
| Average identity of full alignment: | 26 % |
| Average coverage of the sequence by the domain: | 34.56 % |
HMM information
| HMM build commands: |
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 23193494 -E 1000 --cpu 4 HMM pfamseq
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| Model details: |
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| Model length: | 117 | ||||||||||||
| Family (HMM) version: | 7 | ||||||||||||
| Download: | download the raw HMM for this family |
Species distribution
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Interactions
There is 1 interaction for this family. More...
HhH-GPDStructures
For those sequences which have a structure in the Protein DataBank, we use the mapping between UniProt, PDB and Pfam coordinate systems from the PDBe group, to allow us to map Pfam domains onto UniProt sequences and three-dimensional protein structures. The table below shows the structures on which the OGG_N domain has been found. There are 31 instances of this domain found in the PDB. Note that there may be multiple copies of the domain in a single PDB structure, since many structures contain multiple copies of the same protein seqence.
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Archea
Eukaryota
Bacteria
Other sequences
Viruses
Unclassified
Viroids
Unclassified sequence