Isoleucine is one of the three branched-chain amino acids (BCAAs), along with valine and leucine. As an essential amino acid, isoleucine needs to be consumed regularly and can be found naturally in dietary proteins like meat, fish, soy, and dairy.[1][2] Isoleucine serves as a building block for proteins, but it’s also thought to function as a signaling molecule in the body, involved in the regulation of protein, glucose, and lipid metabolism; glucose transport; and immune function.[3]
What is isoleucine?
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•Last Updated: October 13, 2024