no hydrolysis was observed for polypeptides with five or more residues having n-terminal acetylated tyr ( enkephalin ) or ser ( alpha-melanocyte-stimulating hormone , thymosin alpha 1 ) , supporting the notion that the enzyme plays a role only in turnover of smaller peptides formed perhaps as a result of endopeptidase cleavage of proteins or polypeptides containing acetylated met at the n terminus .
C0020291
hydrolysis
C0030946
endopeptidase