Proteases that attack selected peptide bonds within a polypeptide chain are synthesized and secreted as inactive forms called:
A)carboxypeptidases.
B)aminopeptidases.
C)zymogens.
D)none of the above

Question

Quizplus · Accepted Answer

Proteases that attack selected peptide bonds within a polypeptide chain are synthesized and secreted as inactive forms called zymogens. Zymogens are activated by cleavage of a specific peptide bond, which removes a blocking peptide or protein domain, and exposes an active site necessary for proteolysis. Examples of zymogens include trypsinogen, chymotrypsinogen, and procarboxypeptidases.

Proteases That Attack Selected Peptide Bonds Within a Polypeptide Chain