Alanine, which is abbreviated as the 3-letter Ala or the single letter A, is one of the 20 amino acids that make up proteins in our body. Alanine’s R-group is a simple one carbon unit, or a methyl group. This R-group makes alanine a non-polar, hydrophobic amino acid, with a neutral charge at physiological pH.

Key Points

  • Alanine
    • Abbreviations
      • Ala, A         
    • Chemical Structure
    • R-Group: methyl (-CH3)
    • Polarity
      • Non-polar (lipid soluble/hydrophobic)
    • Charge at pH 7
      • Neutral (0)