R2U
PCM
| Residue type | PCM type | Category | Position | UniProt PTM accession | Entries in PDB |
| ARG | None | Metal coordination | Amino-acid side chain (Any position) | 1 | |
| ASP | None | Metal coordination | Amino-acid side chain (Any position) | 3 | |
| ASP | None | Metal coordination | Amino-acid side chain (Any position) | 2 | |
| ASP | None | Metal coordination | Amino-acid backbone (Any position) | 1 | |
| ASP | None | Metal coordination | Amino-acid side chain (Any position) | 3 | |
| ASP | None | Metal coordination | Amino-acid side chain (Any position) | 3 |
