A0A1G6I4S6 · A0A1G6I4S6_9BACT

  • Protein
    Methionine aminopeptidase
  • Gene
    map
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    3/5

Function

function

Removes the N-terminal methionine from nascent proteins. The N-terminal methionine is often cleaved when the second residue in the primary sequence is small and uncharged (Met-Ala-, Cys, Gly, Pro, Ser, Thr, or Val). Requires deformylation of the N(alpha)-formylated initiator methionine before it can be hydrolyzed.

Catalytic activity

  • Release of N-terminal amino acids, preferentially methionine, from peptides and arylamides.
    EC:3.4.11.18 (UniProtKB | ENZYME | Rhea)

Cofactor

Co2+ (UniProtKB | Rhea| CHEBI:48828 )

Zn2+ (UniProtKB | Rhea| CHEBI:29105 )

Mn2+ (UniProtKB | Rhea| CHEBI:29035 )

Fe2+ (UniProtKB | Rhea| CHEBI:29033 )

Note: Binds 2 divalent metal cations per subunit. Has a high-affinity and a low affinity metal-binding site. The true nature of the physiological cofactor is under debate. The enzyme is active with cobalt, zinc, manganese or divalent iron ions. Most likely, methionine aminopeptidases function as mononuclear Fe2+-metalloproteases under physiological conditions, and the catalytically relevant metal-binding site has been assigned to the histidine-containing high-affinity site.

Features

Showing features for binding site.

TypeIDPosition(s)Description
Binding site78substrate
Binding site96a divalent metal cation 1 (UniProtKB | ChEBI)
Binding site107a divalent metal cation 1 (UniProtKB | ChEBI)
Binding site107a divalent metal cation 2 (UniProtKB | ChEBI); catalytic
Binding site170a divalent metal cation 2 (UniProtKB | ChEBI); catalytic
Binding site177substrate
Binding site203a divalent metal cation 2 (UniProtKB | ChEBI); catalytic
Binding site234a divalent metal cation 2 (UniProtKB | ChEBI); catalytic
Binding site234a divalent metal cation 1 (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentcytosol
Molecular Functioninitiator methionyl aminopeptidase activity
Molecular Functionmetalloaminopeptidase activity
Molecular Functiontransition metal ion binding
Biological Processproteolysis

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Methionine aminopeptidase
  • EC number
  • Short names
    MAP
    ; MetAP
  • Alternative names
    • Peptidase M

Gene names

    • Name
      map
    • ORF names
      E4650_02515
      , SAMN04488588_0244

Organism names

  • Taxonomic identifier
  • Organism
  • Strains
    • WG14
    • HO-Geo1
  • Taxonomic lineage
    Bacteria > Thermotogota > Thermotogae > Petrotogales > Petrotogaceae > Geotoga

Accessions

  • Primary accession
    A0A1G6I4S6

Proteomes

Subcellular Location

Interaction

Subunit

Monomer.

Protein-protein interaction databases

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain11-241Peptidase M24

Sequence similarities

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    255
  • Mass (Da)
    28,279
  • Last updated
    2017-11-22 v1
  • Checksum
    C2E9C146D59518E7
MIIIKTDKEIEKMRRAGEHLARLLDVVLPQIIKQGNNAEQVEEFVLQFIDEIGGTPTFKGYNGYPYATNVSVNEEVIHGFPTKDKIFKNGDIVSVDCGITLDGYIADSARTYYVGEISESEKKLINTTYEALLVGVEKAIIGNRIGDISNAIQKYVEDKGFSVIRDFVGHGVGRKLHEDPQVPNFGKEGKGPKLRKNMTLAIEPMVSMGDFNVQILEDGWTTITEDKSKAAHFEYTIVVTEEGPEILSGSPNLKP

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
FMYV01000001
EMBL· GenBank· DDBJ
SDC01451.1
EMBL· GenBank· DDBJ
Genomic DNA
SRME01000001
EMBL· GenBank· DDBJ
TGG89087.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
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