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UniProtKB/Swiss-Prot entry Q8TI34


[Entry info] [Name and origin] [References] [Comments] [Cross-references] [Keywords] [Features] [Sequence] [Tools]

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Entry information
Entry name OGT_METAC
Primary accession number Q8TI34
Secondary accession numbers None
Integrated into Swiss-Prot on May 10, 2004
Sequence was last modified on June 1, 2002 (Sequence version 1)
Annotations were last modified on    July 22, 2008 (Entry version 39)
Name and origin of the protein
Protein name Methylated-DNA--protein-cysteine methyltransferase
Synonyms EC 2.1.1.63
6-O-methylguanine-DNA methyltransferase
MGMT
O-6-methylguanine-DNA-alkyltransferase
Gene name
Name: ogt
OrderedLocusNames: MA_4322
From
Methanosarcina acetivorans [TaxID: 2214] [HAMAP proteome]
Taxonomy Archaea; Euryarchaeota; Methanomicrobia; Methanosarcinales; Methanosarcinaceae; Methanosarcina.
Protein existence 3: Inferred from homology;
References
[1]
NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
STRAIN=ATCC 35395 / DSM 2834 / JCM 12185 / C2A;
DOI=10.1101/gr.223902; PubMed=11932238 [NCBI, ExPASy, EBI, Israel, Japan]
Galagan J.E., Nusbaum C., Roy A., Endrizzi M.G., Macdonald P., FitzHugh W., Calvo S., Engels R., Smirnov S., Atnoor D., Brown A., Allen N., Naylor J., Stange-Thomann N., DeArellano K., Johnson R., Linton L., McEwan P., McKernan K., Talamas J., Tirrell A., Ye W., Zimmer A., Barber R.D., Cann I., Graham D.E., Grahame D.A., Guss A.M., Hedderich R., Ingram-Smith C., Kuettner H.C., Krzycki J.A., Leigh J.A., Li W., Liu J., Mukhopadhyay B., Reeve J.N., Smith K., Springer T.A., Umayam L.A., White O., White R.H., de Macario E.C., Ferry J.G., Jarrell K.F., Jing H., Macario A.J.L., Paulsen I.T., Pritchett M., Sowers K.R., Swanson R.V., Zinder S.H., Lander E., Metcalf W.W., Birren B.;
"The genome of Methanosarcina acetivorans reveals extensive metabolic and physiological diversity.";
Genome Res. 12:532-542(2002).
Comments
  • FUNCTION: Involved in the cellular defense against the biological effects of O6-methylguanine (O6-MeG) in DNA. Repairs alkylated guanine in DNA by stoichiometrically transferring the alkyl group at the O-6 position to a cysteine residue in the enzyme. This is a suicide reaction: the enzyme is irreversibly inactivated (By similarity).
  • CATALYTIC ACTIVITY: DNA (containing 6-O-methylguanine) + protein L-cysteine = DNA (without 6-O-methylguanine) + protein S-methyl-L-cysteine.
  • SUBCELLULAR LOCATION: Cytoplasm (By similarity).
  • SIMILARITY: Belongs to the MGMT family.
Copyright
Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms. Distributed under the Creative Commons Attribution-NoDerivs License.
Cross-references
Sequence databases
EMBL
AE010299; AAM07666.1; -; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
RefSeq NP_619186.1; -.
3D structure databases
HSSP P06134; 1SFE. [HSSP ENTRY / SWISS-3DIMAGE / PDB]
ModBase Q8TI34.
Enzyme and pathway databases
BioCyc MACE188937:MA4322-MON; -.
Ontologies
GO
GO:0005737; Cellular component: cytoplasm (inferred from electronic annotation from HAMAP).
GO:0003908; Molecular function: methylated-DNA-[protein]-cysteine S-methyltransferase activity (inferred from electronic annotation from HAMAP).
GO:0006307; Biological process: DNA dealkylation (inferred from electronic annotation from HAMAP).
QuickGo view.
Family and domain databases
HAMAP MF_00772; -; 1.
PBIL [Tree]
InterPro IPR001497; MethylDNA_cys_MeTrfase_AS.
IPR014048; MethylDNA_cys_MeTrfase_DNA_bd.
IPR008332; MethylG_MeTrfase.
IPR011991; Wing_hlx_DNA_bd.
Graphical view of domain structure.
Gene3D G3DSA:1.10.10.10; Wing_hlx_DNA_bd; 1.
PANTHER PTHR10815; MethylDNA_cys_mtrans_DNA_bd; 1.
Pfam PF01035; DNA_binding_1; 1.
PF02870; Methyltransf_1N; 1.
Pfam graphical view of domain structure.
TIGRFAMs TIGR00589; ogt; 1.
PROSITE PS00374; MGMT; 1.
ProtoNet Q8TI34.
Genome annotation databases
GeneID 1476216; -.
GenomeReviews AE010299_GR; MA_4322.
KEGG mac:MA4322; -.
NMPDR fig|188937.1.peg.4212; -.
Phylogenomic databases
HOGENOM Q8TI34; -.
Genome annotation databases
CMR Q8TI34; MA_4322.
Other
UniRef View cluster of proteins with at least 50% / 90% / 100% identity.
Keywords
Complete proteome; Cytoplasm; DNA damage; DNA repair; Methyltransferase; Transferase.
Features
SEVIEWER logo Feature table viewer
KeyFrom   To Length Description FTId
CHAIN   1   156  156     Methylated-DNA--protein-cysteine methyltransferase. PRO_0000139376
ACT_SITE   126   126        Nucleophile; methyl group acceptor (By similarity). 
Sequence information
Length: 156 AA [This is the length of the unprocessed precursor] Molecular weight: 17337 Da [This is the MW of the unprocessed precursor] CRC64: 0B54966FE1B59981 [This is a checksum on the sequence]
        10         20         30         40         50         60 
MYYAIFESPI GPILLAGDEE GLKYVNFMKG KKKIEVPDSW VENEEFFREA SRQLEAYFAG 

        70         80         90        100        110        120 
ELKSFDVKLA PEGTEFQKSV WNALKEIPYG ETRTYGEIAK NIGNPKASRA VGLANNRNPI 

       130        140        150 
AIIVPCHRVI GANGKLTGYA SGLDIKEFLL KLEGSC 

Q8TI34 in FASTA format

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