a      b      turn
                        ----   ----    ----
Alanine        A	1.42   0.83    0.66
Arginine       R 	0.98   0.93    0.95
Aspartic Acid  D	1.01   0.54    1.46
Asparagine     N	0.67   0.89    1.56
Cysteine       C	0.70   1.19    1.19
Glutamic Acid  E	1.39   1.17    0.74
Glutamine      Q	1.11   1.10    0.98
Glycine        G	0.57   0.75    1.56
Histidine      H	1.00   0.87    0.95
Isoleucine     I	1.08   1.60    0.47
Leucine        L	1.41   1.30    0.59
Lysine         K	1.14   0.74    1.01
Methionine     M	1.45   1.05    0.60
Phenylalanine  F	1.13   1.38    0.60
Proline        P	0.57   0.55    1.52
Serine         S	0.77   0.75    1.43
Threonine      T	0.83   1.19    0.96
Tryptophan     W	1.08   1.37    0.96
Tyrosine       Y	0.69   1.47    1.14
Valine         V	1.06   1.70    0.50