Initiator and Executioner Caspases Share All of the Following Features

Multiple Choice

Initiator and executioner caspases share all of the following features EXCEPT that ...

A) they are cysteine proteases (they have a cysteine residue at their active site) .
B) their inactive form is a monomer.
C) they undergo cleavage during activation.
D) their active form is a dimer.
E) they are inhibited by IAPs.