PTM General Information
| PTM Description | Ubiquitinamethionine |
| Modified Amino Acid | M |
| Position of Modification on Amino Acid | protein backbone |
| Position in the Polypeptide | N-terminal amino group |
| Correction Formula | H-4;O-1 |
| Monoisotopic Mass Difference | 20.0262 |
| Average Mass Difference | 20.03 |
| Localization | cytoplasm, nucleus, mitochondrial matrix, etc. [Detail] |
| RESID ID | AA0379 |
| Formula Structure |  |