Side chain polarity Reset Display the methylene portion of the side-chain as Ball & Stick. Some facts on L-isoleucine. Abbreviation: Ile. One-letter code: I. Molecular mass: 131 daltons. Side chain (or R-group) features: Structural formula: Formula: -CH(-CH3)-CH2-CH3; Category: hydrophobic; aliphatic. pKa: none. Return to image of Ile.
Some facts on L-isoleucine.