Amino Acid Abbreviations:These abbreviations represent the essential components of proteins, known as amino acids. Each amino acid is identified by both a three-letter and a single-letter code. For instance, alanine is represented by "Ala" in the three-letter format and "A" in the single-letter format. The three-letter abbreviations, like "Ala," are predominantly used over the single-letter ones, such as "A." Consequently, the list focuses on the three-letter codes for the 20 alpha-amino acids specified by the genetic code:- Alanine: Ala- Arginine: Arg- Asparagine: Asn- Aspartic Acid: Asp- Cysteine: Cys- Glutamic Acid: Glu- Glutamine: Gln- Glycine: Gly- Histidine: His- Isoleucine: Ile- Leucine: Leu- Lysine: Lys- Methionine: Met- Phenylalanine: Phe- Proline: Pro- Serine: Ser- Threonine: Thr- Tryptophan: Trp- Tyrosine: Tyr- Valine: ValThese three-letter abbreviations are used to denote individual amino acids and to represent the sequence of amino acids in a protein or polypeptide chain. For example, a segment of a sequence might be: Gly-Ile-Val-Glu-Gln-Cys-Cys-Ala-Ser-Val. By convention, the sequence begins with the N-terminal amino acid on the left and proceeds to the C-terminal amino acid on the right.
