Methionine aminopeptidase is a cobalt-binding enzyme. Bacterial and organellar examples (type I) differ from eukaroytic and archaeal (type II) examples in lacking a region of approximately 60 amino acids between the 4th and 5th cobalt-binding ligands. This model describes type I. The role of this protein in general is to produce the mature form of cytosolic proteins by removing the N-terminal methionine. [Protein fate, Protein modification and repair]
Jiyao W et al.(2023). "The conserved domain database in 2023.",