Peptidase M24A, methionine aminopeptidase, subfamily 1 (IPR002467)

Short name: Pept_M24A_MAP1

Overlapping homologous superfamilies

Family relationships


This group of metallopeptidases belong to MEROPS peptidase family M24 (clan MG), subfamily M24A.

Methionine aminopeptidase (EC: (MAP) catalyses the hydrolytic cleavage of the N-terminal methionine from newly synthesised polypeptides if the penultimate amino acid is small, with different tolerance to Val and Thr at this position [PMID: 20521764]. All MAP studied to date are monomeric proteins that require cobalt ions for activity. Two subfamilies of MAP enzymes are known to exist [PMID: 7644482, PMID: 8772380]. While being evolutionary related, they only share a limited amount of sequence similarity, mostly clustered around the residues shown to be involved in cobalt-binding in Escherichia coli MAP [PMID: 8471602]. Subfamily 1 consists of enzymes from prokaryotes as well as eukaryotic MAP-1, while the second group (IPR002468) is made up of archaeal MAP and eukaryotic MAP-2.

GO terms

Biological Process

GO:0006508 proteolysis

Molecular Function

GO:0004177 aminopeptidase activity
GO:0008235 metalloexopeptidase activity

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.
PROSITE patterns