Amino acids Hopp-Woods
Alanine -0.5
Arginine 3
Asparagine 0.2
Aspartic acid 3
Cysteine -1
Glutamine 0.2
Glutamic acid 3
Glycine 0
Histidine -0.5
Isoleucine -1.8
Leucine -1.8
Lysine 3
Methionine -1.3
Phenylalanine -2.5
Proline 0
Serine 0.3
Threonine -0.4
Tryptophan -3.4
Tyrosine -2.3
Valine -1.5
Table 1: Hydrophilicity scales of Hopp-Woods.