16743 Peptidase_M48 superfamilyThalassiosira pseudonana
GO:0004222 GO:0006508 GO:0016020 -
Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which water acts as a nucleophile, one or two metal ions hold the water molecule in place, and charged amino acid side chains are ligands for the metal ions.
The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
Double layer of lipid molecules that encloses all cells, and, in eukaryotes, many organelles; may be a single or double lipid bilayer; also includes associated proteins.