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. 2008 Sep 24;3(9):e3268. doi: 10.1371/journal.pone.0003268

Table 20. Categorization of amino acids into three groups for a number of physicochemical properties [42].

Property Group 1 Group 2 Group 3
Hydrophobicity RKEDQN GASTPHY CVLIMFW
Polarizability GASCTPD NVEQIL MHKFRYW
Polarity LIFWCMVY PATGS HQRKNED
Van der Waal's volume GASDT CPNVEQIL KMHFRYW