A0A3F3JMH9 · A0A3F3JMH9_ENTFC
- ProteinMethylated-DNA--protein-cysteine methyltransferase
- StatusUniProtKB unreviewed (TrEMBL)
- Amino acids154 (go to sequence)
- Protein existenceInferred from homology
- Annotation score2/5
Function
function
Involved in the cellular defense against the biological effects of O6-methylguanine (O6-MeG) and O4-methylthymine (O4-MeT) in DNA. Repairs the methylated nucleobase in DNA by stoichiometrically transferring the methyl group to a cysteine residue in the enzyme. This is a suicide reaction: the enzyme is irreversibly inactivated.
Miscellaneous
This enzyme catalyzes only one turnover and therefore is not strictly catalytic. According to one definition, an enzyme is a biocatalyst that acts repeatedly and over many reaction cycles.
Catalytic activity
- a 4-O-methyl-thymidine in DNA + L-cysteinyl-[protein] = a thymidine in DNA + S-methyl-L-cysteinyl-[protein]
Features
Showing features for active site.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Active site | 118 | Nucleophile; methyl group acceptor | |||
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytoplasm | |
Molecular Function | methylated-DNA-[protein]-cysteine S-methyltransferase activity | |
Biological Process | DNA alkylation repair | |
Biological Process | methylation |
Keywords
- Molecular function
- Biological process
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameMethylated-DNA--protein-cysteine methyltransferase
- EC number
- Alternative names
Gene names
Organism names
- Strain
- Taxonomic lineageBacteria > Bacillota > Bacilli > Lactobacillales > Enterococcaceae > Enterococcus
Accessions
- Primary accessionA0A3F3JMH9
Proteomes
Subcellular Location
Structure
Sequence
- Sequence statusComplete
- Length154
- Mass (Da)17,219
- Last updated2019-01-16 v1
- MD5 ChecksumF38D759B7D27490CBAF5A4B2FBAEF1B2
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
JABWVJ010000004 EMBL· GenBank· DDBJ | NVD82984.1 EMBL· GenBank· DDBJ | Genomic DNA |