NH2
PCM
| Residue type | PCM type | Category | Position | UniProt PTM accession | Entries in PDB |
| ALA | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0057 | 468 |
| VAL | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0303 | 90 |
| ILE | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0161 | 88 |
| MET | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0173 | 29 |
| TYR | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0302 | 452 |
| SER | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0275 | 153 |
| THR | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0293 | 58 |
| ARG | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0060 | 138 |
| ASP | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0063 | 29 |
| GLU | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0129 | 49 |
| CYS | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0102 | 343 |
| GLY | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0132 | 681 |
| PRO | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0257 | 99 |
| LEU | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0166 | 427 |
| PHE | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0248 | 141 |
| TRP | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0296 | 25 |
| ASN | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0062 | 74 |
| GLN | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0130 | 53 |
| HIS | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0148 | 134 |
| LYS | None | Terminal amidation | Amino-acid backbone (C-terminal) | PTM-0168 | 520 |
| DPR | None | Terminal amidation | Amino-acid backbone (C-terminal) | 5 | |
| DAL | None | Terminal amidation | Amino-acid backbone (C-terminal) | 10 | |
| DCY | None | Terminal amidation | Amino-acid backbone (C-terminal) | 8 | |
| DTY | None | Terminal amidation | Amino-acid backbone (C-terminal) | 0 | |
| DVA | None | Terminal amidation | Amino-acid backbone (C-terminal) | 5 | |
| DAS | None | Terminal amidation | Amino-acid backbone (C-terminal) | 0 | |
| DPN | None | Terminal amidation | Amino-acid backbone (C-terminal) | 0 | |
| DTR | None | Terminal amidation | Amino-acid backbone (C-terminal) | 0 | |
| DAR | None | Terminal amidation | Amino-acid backbone (C-terminal) | 8 | |
| DTH | None | Terminal amidation | Amino-acid backbone (C-terminal) | 1 | |
| DLE | None | Terminal amidation | Amino-acid backbone (C-terminal) | 25 | |
| DHI | None | Terminal amidation | Amino-acid backbone (C-terminal) | 0 | |
| DSN | None | Terminal amidation | Amino-acid backbone (C-terminal) | 4 | |
| DGL | None | Terminal amidation | Amino-acid backbone (C-terminal) | 0 | |
| DLY | None | Terminal amidation | Amino-acid backbone (C-terminal) | 2 | |
| MED | None | Terminal amidation | Amino-acid backbone (C-terminal) | 0 | |
| DSG | None | Terminal amidation | Amino-acid backbone (C-terminal) | 0 | |
| DIL | None | Terminal amidation | Amino-acid backbone (C-terminal) | 1 | |
| DGN | None | Terminal amidation | Amino-acid backbone (C-terminal) | 2 | |
| PYL | None | Terminal amidation | Amino-acid backbone (C-terminal) | 0 | |
| SEC | None | Terminal amidation | Amino-acid backbone (C-terminal) | 0 | |
| null | None | Terminal amidation | Amino-acid backbone (C-terminal) | 115 |
