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Valine is an essential amino acid, which means that it cannot be manufactured in

ID: 909220 • Letter: V

Question

Valine is an essential amino acid, which means that it cannot be manufactured in the body and must be obtained through dietary sources. It is a branched-chain amino acid that works with the other two BCAAs (isoleucine & leucine) to promote normal growth, repair tissues, regulate blood sugar, and provide the body with energy. Correct the drawings below (i.e., add or remove lone pairs, charges, and atoms) to show valine at pH 1, pH 7, and pH 11. The PKa values for Valine?s ionizable groups are 2.29 for the - COOH group and 9.72 for the - NH^3+ group.

Explanation / Answer

Valine is an essential amino acid, which means that it cannot be manufactured in