| Type | PTM | Description | Sumoylated at Lys-20 by SUMO1 and at Lys-509 by SUMO1, SUMO2 and SUMO3. Sumoylation probably occurs sequentially, with that of Lys-20 preceding that of Lys-509. It does not alter association with heterochromatin, but is required for the repression of transcription. |
