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The active site of chymotrypsin consists of a catalytic triad of which of the following amino acid residues?

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The active site of chymotrypsin consists of a catalytic triad of which of the following amino acid residues?

(a) Serine, histidine and aspartate

(b) Serine, histidine and glutamate

(c) Threonine, histidine and aspartate

(d) Methionine, histidine and aspartate

This question was addressed to me in my homework.

The doubt is from Examples Of Enzymatic actions in portion Enzymes, Carbohydrates and Gycobiology of Biochemistry

1 Answer

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Correct answer is (a) Serine, histidine and aspartate

The explanation: Aspartate holds the histidine side chain in the correct direction to accept proton from serine.

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