Chou-Fasman Amino Acid Propensities
| A.A. | Helix | Sheet | ||
| Designation | P | Designation | P | |
| Ala | H | 1.42 | i | 0.83 |
| Cys | i | 0.70 | h | 1.19 |
| Asp | I | 1.01 | B | 0.54 |
| Glu | H | 1.51 | B | 0.37 |
| Phe | h | 1.13 | h | 1.38 |
| Gly | B | 0.57 | b | 0.75 |
| His | I | 1.00 | h | 0.87 |
| Ile | h | 1.08 | H | 1.60 |
| Lys | h | 1.16 | b | 0.74 |
| Leu | H | 1.21 | h | 1.30 |
| Met | H | 1.45 | h | 1.05 |
| Asn | b | 0.67 | b | 0.89 |
| Pro | B | 0.57 | B | 0.55 |
| Gln | h | 1.11 | h | 1.10 |
| Arg | i | 0.98 | i | 0.93 |
| Ser | i | 0.77 | b | 0.75 |
| Thr | i | 0.83 | h | 1.19 |
| Val | h | 1.06 | H | 1.70 |
| Trp | h | 1.08 | h | 1.37 | Tyr | b | 0.69 | H | 1.47 |