XCC
PCM
| Residue type | PCM type | Category | Position | UniProt PTM accession | Entries in PDB |
| CYS | None | Metal coordination | Amino-acid side chain (Any position) | 118 | |
| CYS | None | Metal coordination | Amino-acid side chain (Any position) | 134 | |
| CYS | None | Metal coordination | Amino-acid side chain (Any position) | 114 | |
| CYS | None | Metal coordination | Amino-acid side chain (Any position) | 119 | |
| CYS | None | Metal coordination | Amino-acid side chain (Any position) | 99 | |
| HIS | None | Metal coordination | Amino-acid side chain (Any position) | 0 | |
| HIS | None | Metal coordination | Amino-acid side chain (Any position) | 118 | |
| SER | None | Metal coordination | Amino-acid side chain (Any position) | 0 | |
| LYS | None | Metal coordination | Amino-acid side chain (Any position) | 2 | |
| LYS | None | Metal coordination | Amino-acid side chain (Any position) | 1 |
