C8Z3V4 · MAP2_YEAS8

Function

function

Cotranslationally 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).

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 site174substrate
Binding site194a divalent metal cation 1 (UniProtKB | ChEBI)
Binding site205a divalent metal cation 1 (UniProtKB | ChEBI)
Binding site205a divalent metal cation 2 (UniProtKB | ChEBI); catalytic
Binding site274a divalent metal cation 2 (UniProtKB | ChEBI); catalytic
Binding site282substrate
Binding site307a divalent metal cation 2 (UniProtKB | ChEBI); catalytic
Binding site402a divalent metal cation 1 (UniProtKB | ChEBI)
Binding site402a divalent metal cation 2 (UniProtKB | ChEBI); catalytic

GO annotations

AspectTerm
Cellular Componentcytoplasm
Molecular Functioninitiator methionyl aminopeptidase activity
Molecular Functionmetal ion binding
Molecular Functionmetalloaminopeptidase activity
Biological Processproteolysis

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Methionine aminopeptidase 2
  • EC number
  • Short names
    MAP 2
    ; MetAP 2
  • Alternative names
    • Peptidase M

Gene names

    • Name
      MAP2
    • ORF names
      EC1118_1B15_0199g

Organism names

Accessions

  • Primary accession
    C8Z3V4

Proteomes

    • Identifier
    • Component
      Chromosome II, Scaffold EC1118_1B15

Subcellular Location

Keywords

PTM/Processing

Features

Showing features for chain, modified residue.

TypeIDPosition(s)Description
ChainPRO_00004076761-421Methionine aminopeptidase 2
Modified residue35Phosphoserine

Keywords

Structure

Family & Domains

Features

Showing features for region, compositional bias.

TypeIDPosition(s)Description
Region1-53Disordered
Compositional bias18-41Basic and acidic residues

Sequence similarities

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    421
  • Mass (Da)
    47,518
  • Last updated
    2009-11-03 v1
  • Checksum
    206E9651D88925A8
MTDAEIENSPASDLKELNLENEGVEQQDQAKADESDPVESKKKKNKKKKKKKSNVKKIELLFPDGKYPEGAWMDYHQDFNLQRTTDEESRYLKRDLERAEHWNDVRKGAEIHRRVRRAIKDRIVPGMKLMDIADMIENTTRKYTGAENLLAMEDPKSQGIGFPTGLSLNHCAAHFTPNAGDKTVLKYEDVMKVDYGVQVNGNIIDSAFTVSFDPQYDNLLAAVKDATYTGIKEAGIDVRLTDIGEAIQEVMESYEVEINGETYQVKPCRNLCGHSIAPYRIHGGKSVPIVKNGDTTKMEEGEHFAIETFGSTGRGYVTAGGEVSHYARSAEDHQVMPTLDSAKNLLKTIDRNFGTLPFCRRYLDRLGQEKYLFALNNLVRHGLVQDYPPLNDIPGSYTAQFEHTILLHAHKKEVVSKGDDY

Features

Showing features for compositional bias.

TypeIDPosition(s)Description
Compositional bias18-41Basic and acidic residues

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
FN393060
EMBL· GenBank· DDBJ
CAY77693.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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