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Amino Acid Physical Properties

Amino Acid Physical Properties
Amino Acids Code Hydropathy Charge pKa
NH2
pKa
COOH
pK(R) Solubility
Arginine R hydrophilic + 9.09 2.18 13.2 71.8
Asparagine N hydrophilic N 8.8 2.02   2.4
Aspartate D hydrophilic - 9.6 1.88 3.65 0.42
Glutamate E hydrophilic - 9.67 2.19 4.25 0.72
Glutamine Q hydrophilic N 9.13 2.17   2.6
Lysine K hydrophilic + 10.28 8.9 2.2  
Serine S hydrophilic N 9.15 2.21   36.2
Threonine T hydrophilic N 9.12 2.15   freely
Cysteine C moderate N 10.78 1.71 8.33 freely
Histidine H moderate + 8.97 1.78 6 4.19
Methionine M moderate N 9.21 2.28   5.14
Alanine A hydrophobic N 9.87 2.35   15.8
Valine V hydrophobic N 9.72 2.29   5.6
Glycine G hydrophobic N 9.6 2.34   22.5
Isoleucine I hydrophobic N 9.76 2.32   3.36
Leucine L hydrophobic N 9.6 2.36   2.37
Phenylalanine F hydrophobic N 9.24 2.58   2.7
Proline P hydrophobic N 10.6 1.99   1.54
Tryptophan W hydrophobic N 9.39 2.38   1.06
Tyrosine Y hydrophobic N 9.11 2.2 10.1 0.038