This latest deep dive focuses on the unique metabolic journey of the Branched-Chain Amino Acids (BCAAs): Leucine, Isoleucine, and Valine. Unlike many other amino acids, BCAAs are not extensively catabolized by the liver; instead, they serve as a critical energy source for extrahepatic tissues, primarily skeletal muscle. We explore the shared enzymatic machinery that governs their breakdown and how their specific chemical structures dictate whether they fuel the production of glucose or ketone bodies.

Topic Outline

• The BCAA Chemical Profile

◦ An overview of the nonpolar, aliphatic, and hydrophobic side chains of BCAAs.

◦ Distinguishing the carbon counts: Valine (5C) versus the 6-c ...