1aye: HUMAN PROCARBOXYPEPTIDASE A2
1dtd: CRYSTAL STRUCTURE OF THE COMPLEX BETWEEN THE LEECH CARBOXYPEPTIDASE INHIBITOR AND THE HUMAN CARBOXYPEPTIDASE A2 (LCI-CPA2)
1o6x: NMR SOLUTION STRUCTURE OF THE ACTIVATION DOMAIN OF HUMAN PROCARBOXYPEPTIDASE A2