ALA | ARG | ASN | ASP | CYS | GLN | GLU | GLY | HIS | ILE | LEU | LYS | MET | PHE | PRO | SER | THR | TRP | TYR | VAL |
| PRO | PROLINE |
| PRO_LEO2 | L-PROLINE C-TERMINAL DEPROTONATED FRAGMENT |
| PRO_LEO2H | L-PROLINE C-TERMINAL PROTONATED FRAGMENT |
| PRO_LFOH | L-PROLINE FREE NEUTRAL |
| PRO_LFZW | L-PROLINE FREE ZWITTERION |
| PRO_LL | L-PROLINE - LINKING EMBEDDED |
| PRO_LSN3 | L-PROLINE N-TERMINAL PROTONATED FRAGMENT |