Side chain polarity Reset Display the methyl groups as Ball & Stick. Add a distance measure (in Å units). Some facts on L-leucine. Abbreviation: Leu. One-letter code: L. Molecular mass: 131 daltons. Side chain (or R-group) features: Structural formula: Formula: -CH2-CH-(CH3)2; Category: hydrophobic; aliphatic. pKa: none. Return to image of Leu.
Some facts on L-leucine.