1. In the hydrolysis of p-nitrophenylacetate by chymotrypsin all of the following are correct EXCEPT

1. In the hydrolysis of p-nitrophenylacetate by chymotrypsin all of the following are correct EXCEPT a. the first product is acetic acid b. an acetyl-enzyme intermediate forms during the mechanism c. attack of a water molecule on the acyl-enzyme intermediate yeilds the second product d. the active site contains a serine residue, an unprotonated histidine, and an unprotonated aspartate residue at pH 7.0 prior to bind the substrate e. none of the above

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