CPLM 1.0 - Compendium of Protein Lysine Modification
TagContent
CPLM ID CPLM-003543
UniProt Accession
Genbank Protein ID
Genbank Nucleotide ID
Protein Name
 Methylated-DNA--protein-cysteine methyltransferase 
Protein Synonyms/Alias
 6-O-methylguanine-DNA methyltransferase; MGMT; O-6-methylguanine-DNA-alkyltransferase 
Gene Name
 ogt 
Gene Synonyms/Alias
 b1335; JW1329 
Created Date
 July 27, 2013 
Organism
 Escherichia coli (strain K12) 
NCBI Taxa ID
 83333 
Lysine Modification
Position
Peptide
Type
References
65NPGGLSDKLREYFAGacetylation[1]
95PFQREVWKTLRTIPCacetylation[1]
Reference
 [1] Acetyl-Phosphate Is a Critical Determinant of Lysine Acetylation in E. coli.
 Weinert BT, Iesmantavicius V, Wagner SA, Schölz C, Gummesson B, Beli P, Nyström T, Choudhary C.
 Mol Cell. 2013 Jul 25;51(2):265-72. [PMID: 23830618
Functional Description
 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. Can also repair O-4-methylthymine. 
Sequence Annotation
 ACT_SITE 139 139 Nucleophile; methyl group acceptor  
Keyword
 Complete proteome; Cytoplasm; Direct protein sequencing; DNA damage; DNA repair; Methyltransferase; Reference proteome; Transferase. 
Sequence Source
 UniProt (SWISSPROT/TrEMBL); GenBank; EMBL 
Protein Length
 171 AA 
Protein Sequence
MLRLLEEKIA TPLGPLWVIC DEQFRLRAVE WEEYSERMVQ LLDIHYRKEG YERISATNPG 60
GLSDKLREYF AGNLSIIDTL PTATGGTPFQ REVWKTLRTI PCGQVMHYGQ LAEQLGRPGA 120
ARAVGAANGS NPISIVVPCH RVIGRNGTMT GYAGGVQRKE WLLRHEGYLL L 171 
Gene Ontology
 GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
 GO:0003908; F:methylated-DNA-[protein]-cysteine S-methyltransferase activity; IEA:HAMAP.
 GO:0006307; P:DNA dealkylation involved in DNA repair; IEA:HAMAP. 
Interpro
 IPR001497; MethylDNA_cys_MeTrfase_AS.
 IPR014048; MethylDNA_cys_MeTrfase_DNA-bd.
 IPR008332; MethylG_MeTrfase.
 IPR023546; MGMT.
 IPR011991; WHTH_DNA-bd_dom. 
Pfam
 PF01035; DNA_binding_1
 PF02870; Methyltransf_1N 
SMART
  
PROSITE
 PS00374; MGMT 
PRINTS