Molecule
Isoleucine
L-isoleucine
Isoleucine is one of the three branched-chain amino acids. Its nonpolar side chain often packs inside folded proteins.
Overview
EXPLORE BY LEVELIsoleucine is one of the three branched-chain amino acids. Its nonpolar side chain often packs inside folded proteins.
Quick Facts
AT A GLANCEOne-letter codeI
Three-letter codeIle
Chemical formulaC₆H₁₃NO₂
Side chainBranched sec-butyl group
Show 3 more facts
Side-chain chemistryNonpolar; branched-chain aliphatic
Human dietary contextEssential in the human diet
Protein-building setOne of the 20 standard protein-building amino acids
Follow the Connections
See how Isoleucine links to other biological records.
All 3 Structured Connections
Recommended Reading
Trusted references for learning more about Isoleucine.
textbookChemical Components of a CellMolecular Biology of the Cell · NCBI Bookshelf textbookFrom RNA to proteinMolecular Biology of the Cell · NCBI Bookshelf textbookBiochemistry · Essential Amino AcidsNCBI Bookshelf · StatPearls pathwayBranched-chain amino acid catabolism (R-HSA-70895)Reactome · Homo sapiens
Research Claims
Isoleucine is a standard amino acid commonly used to build proteins.
Isoleucine uses the residue codes Ile and I.
Isoleucine is classified as essential in the usual human diet.