A
PCM
| Residue type | PCM type | Category | Position | UniProt PTM accession | Entries in PDB |
| ALA | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 5 | |
| ASP | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 9 | |
| GLN | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 1 | |
| LEU | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 6 | |
| LYS | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 10 | |
| MET | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 5 | |
| SER | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 2 | |
| UNK | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 10 | |
| VAL | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 3 | |
| TRP | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 4 | |
| PHE | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 20 | |
| PRO | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 11 | |
| SMC | None | Covalent chemical modification | Amino-acid side chain (Any position) | 4 | |
| ARG | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 3 | |
| CYS | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 1 | |
| GLY | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 1 | |
| HIS | None | Covalent chemical modification | Amino-acid backbone (C-terminal) | 1 |
