Which of the following amino acids would most likely be found in the active site of an enzyme that uses acid-base catalysis?

Name: Which of the following amino acids would most likely be found in the active site of an enzyme that uses acid-base catalysis?
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Question

Quizplus · Accepted Answer

His (Histidine) is often found in the active sites of enzymes that use acid-base catalysis because its side chain has a pKa close to physiological pH, allowing it to act as both an acid and a base.

Which of the Following Amino Acids Would Most Likely Be