ID 3.4.18.1 DE cathepsin X. AN acid carboxypeptidase. AN cathepsin B2. AN cathepsin IV. AN cathepsin Z. AN cysteine-type carboxypeptidase. AN lysosomal carboxypeptidase B. CA Release of C-terminal amino acid residues with broad specificity, CA but lacks action on C-terminal proline. Shows weak endopeptidase CA activity. CC -!- Deamidates Z-Arg-NH2, but shows no action on the arylamide CC derivatives. CC -!- Inhibited by thiol-blocking reagents. CC -!- Belongs to peptidase family C1. DR G5EGP8, CATZ1_CAEEL; P05689, CATZ_BOVIN ; Q9UBR2, CATZ_HUMAN ; DR Q9WUU7, CATZ_MOUSE ; Q6PN98, CATZ_ONCVO ; Q9R1T3, CATZ_RAT ; //