inactivation of cholecystokinin octapeptide in vitro involves a metalloendopeptidase ( ec 3.4.24.11 ) also called enkephalinase that inactivated the peptide both by a sequential pathway of hydrolysis ( removal of phe-nh ( 2 ) followed by cleavage of trp-met-asp ) and by an endopeptidase action ( production of the tetrapeptides ) .
C0020291
hydrolysis
C0030946
endopeptidase