AMINO ACID ABBREVIATIONS AND pKa VALUES
NAME
Alanine Arginine Asparagine Aspartic Acid Cysteine Glutamine Glutamic Acid Glycine Histidine Isoleucine Leucine Lysine Methionine Phenylalanine Proline Serine Threonine Tryptophan Tyrosine Valine
ABBREVIATIONS
pKa VALUES
3 Letter
1 Letter
Ala Arg Asn Asp Cys Gln Glu Gly His Ile Leu Lys Met Phe Pro Ser Thr Trp Tyr Val
A R N D C Q E G H I L K M F P S T W Y V
—COOH 2.34 2.17 2.01 1.89 1.96 2.17 2.19 2.34 1.8 2.35 2.36 2.18 2.28 1.83 1.99 2.21 2.11 2.38 2.2 2.32
+
—NH3
9.69 9.04 8.8 9.60 8.18 9.13 9.67 9.6 9.17 9.68 9.60 8.95 9.2 9.12 10.96 9.15 9.62 9.39 9.11 9.61
R group
12.48 3.65 10.29 4.25 6.00
10.52
13.6 13.6 10.06