Table 1.

Classification of amino acid hydrophobicity

Strongly Hydrophobic: x ≥ 0.25Moderately Hydrophobic: 0.25 > x > 0Moderately Hydrophilic: −0.25 < x < 0Strongly Hydrophilic: x ≤ −0.25
Ile 0.73Gly 0.16Pro −0.07Ser −0.26
Phe 0.61Cys 0.04Thr −0.18His −0.40
Val 0.54Tyr 0.02Glu −0.62
Leu 0.53Asn −0.64
Trp 0.37Gln −0.69
Met 0.26Asp −0.72
Ala 0.25Lys −1.10
Arg −1.76
  • NOTE: The values used in this table were taken from Eisenberg et al. (18). These are consensus values compiled from five individual scales (19-23).