Which of the following enzymes is responsible for the degradation of branched-chain amino acids in the liver?

A Branched-chain alpha-keto acid dehydrogenase complex ✓
B Aminotransferase
C Glutathione synthetase
D Kynureninase

Explanation

The branched-chain alpha-keto acid dehydrogenase complex is a key enzyme in the degradation of branched-chain amino acids, including leucine, isoleucine, and valine.

Mnemonic

BCKD Breaks Down Branched-Chain Amino Acids

Source

Harper's Illustrated Biochemistry, 31st edition
Protein Metabolism Biochemistry Amino Acid Metabolism Hard MEDICAL Confidence: high