Leucine, which abbreviates to the 3-letter Leu or single letter L, is one of the 20 amino acids that make up proteins in our body. Leucine’s R-group is an isobutyl group, which is just a branched, 4-carbon structure. Due to the non-polar nature of this R-group, leucine is also a non-polar, hydrophobic amino acid, with a neutral charge at physiological pH.
- Leu, L
- Chemical Structure
- R-group: Isobutyl -CH2-CH(CH3)2
- Non-polar (lipid soluble/hydrophobic)
- Charge at pH 7
- Neutral (0)