試題詳解

76. Which of the followings describes the initial bond formation in the covalent intermediate in the reaction catalyzed by chymotrypsin?
(A) Serine 195 and the carbonyl carbon in the peptide backbone
(B) Serine 195 and the nitrogen in the peptide backbone
(C) Histidine 57 and the carbonyl carbon in the peptide backbone
(D) Histidine 57 and the nitrogen in the peptide backbone
(E) Aspartate 102 and the carbonyl carbon in the peptide backbone