Adapted from Taylor, W.R. Journal of Theoretical Biology 119(1986), 205-218
| Size | Charge | Hydro- | Aromatic | Notes | |
| A | small | ||||
| C | small | Sulphur | |||
| D | small | negative | philic | ||
| E | medium | negative | philic | ||
| F | large | phobic | Yes | ||
| G | small | No sidechain | |||
| H | large | (positive) | philic | ||
| I | medium | phobic | |||
| K | large | positive | philic | ||
| L | medium | phobic | |||
| M | large | phobic | Sulphur | ||
| N | small | philic | |||
| P | small | Cyclic | |||
| Q | medium | philic | |||
| R | large | positive | philic | ||
| S | small | philic | |||
| T | medium | philic | |||
| V | small | phobic | |||
| W | large | phil | Yes | ||
| Y | large | philic | Yes |
Some classifications (e.g. Size) are somewhat arbitrary.
Adapted
from Taylor, W.R. Journal of Theoretical Biology 119(1986), 205-218