22. The mechanism of chymotrypsin involves which of the following elements?
(A)deprotonation of an active site Asp residue by His to start the reaction
(B) formation of an acyl-enzyme intermediate that must be hydrolyzed to complete the reaction
(C)stabilization of the positively charged His by a GIn residue
(D)direct deprotonation of water by His to generate a hydroxide ion for initiation of the reaction
(E)both a and b occur

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統計： A(0), B(1), C(0), D(0), E(0) #2847551