Propertya Original Source PubMed ID
alpha NH chemical shifts Bundi (1979) 7881270
Normalized frequency of C terminal helix Chou (1978) 364941
Normalized frequency of chain reversal R Tanaka (1977) 557155
Normalized positional frequency at helix termini N2 Aurora-Rose (1998) 9514257
Partition coefficient Garel (1973) 4700470
Relative preference value at C2 Richardson (1988) 3381086
Relative preference value at N1 Richardson (1988) 3381086
Weights for beta sheet at the window position of 0 Qian (1988) 3172241
Amino acid distribution Jukes (1975) 237322
Average relative fractional occurrence in A0(i) Rackovsky (1982) 0903736
Average relative probability of inner beta sheet Kanehisa (1980) 7426680
Composition Grantham (1974) 4843792
Effective partition energy Miyazawa (1985) 2004114
Free energy in alpha helical region Munoz (1994) 7731949
Frequency of the 3rd residue in turn Chou (1978) 364941
Helix formation parameters (delta delta G) O Neil (1990) 2237415
Hydrophobicity Prabhakaran (1990) 2390062
Membrane buried preference parameters Argos (1982) 7151796
Normalized frequency of beta structure Nagano 1973 4728695
Normalized frequency of coil Nagano 1973 4728695
Normalized positional frequency at helix termini Cc Aurora-Rose (1998) 9514257
STERIMOL maximum width of the side chain Fauchere (1988) 3209351
Zimm Bragg parameter sigma x 1.0E4 Sueki (1984) 1004141
aAccessed August 2010 from http://www.genome.jp/aaindex/
Table 2: Feature selection (n=23) from 544 amino acid properties from AAindex.