Protein
The hydrolysis of storage proteins (polypeptides) to their
constituent amino acids is effected by proteinases, which
are categorized in relation to their hydrolytic activity.
Endopeptidases cleave internal peptide bonds to yield
smaller oligopeptides, which are hydrolysed further by
peptidases to yield amino acids. Aminopeptidases and
carboxypeptidases cleave the terminal amino acid from the
free amino or carboxyl end, respectively, of a protein or
oligopeptide chain (Scheme 1).