ACA
PCM
| Residue type | PCM type | Category | Position | UniProt PTM accession | Entries in PDB |
| null | None | Non-standard residue | Amino-acid side chain and backbone (Any position) | 13 | |
| LEU | None | Crosslinker | Amino-acid backbone (C-terminal) | 0 | |
| LEU | None | Crosslinker | Amino-acid backbone (C-terminal) | 0 | |
| ARG | None | Crosslinker | Amino-acid backbone (N-terminal) | 0 | |
| ARG | None | Crosslinker | Amino-acid backbone (N-terminal) | 0 |
