Reference: Release notes for UniProtKB/Swiss-Prot release 2011_09 - September 2011.
Amino acid scale values:
Ala: 8.26 Arg: 5.53 Asn: 4.06 Asp: 5.46 Cys: 1.36 Gln: 3.93 Glu: 6.75 Gly: 7.08 His: 2.27 Ile: 5.97 Leu: 9.66 Lys: 5.85 Met: 2.42 Phe: 3.86 Pro: 4.69 Ser: 6.55 Thr: 5.34 Trp: 1.08 Tyr: 2.92 Val: 6.87