TOPORS
Gene Ontology Biological Process
- cellular response to DNA damage stimulus [IDA]
- intrinsic apoptotic signaling pathway in response to DNA damage [IDA]
- maintenance of protein location in nucleus [IDA]
- negative regulation of apoptotic process [ISS]
- photoreceptor cell outer segment organization [ISS]
- positive regulation of ubiquitin-protein transferase activity [IDA]
- proteasome-mediated ubiquitin-dependent protein catabolic process [IMP]
- protein K48-linked ubiquitination [IDA]
- protein localization to nucleus [IMP]
- protein monoubiquitination [IDA]
- protein sumoylation [IDA, IMP]
- retina layer formation [ISS]
- retinal cone cell development [ISS]
- retinal rod cell development [ISS]
- transcription, DNA-templated [NAS]
- ubiquitin-dependent protein catabolic process [IMP]
Gene Ontology Molecular Function
Gene Ontology Cellular Component
SIN3A
Gene Ontology Biological Process
- activation of innate immune response [IMP]
- blood coagulation [TAS]
- cellular lipid metabolic process [TAS]
- histone deacetylation [IBA]
- negative regulation of circadian rhythm [ISS]
- negative regulation of histone H3-K27 acetylation [IMP]
- negative regulation of protein localization to nucleus [IMP]
- negative regulation of transcription from RNA polymerase II promoter [IMP]
- negative regulation of transcription regulatory region DNA binding [IMP]
- negative regulation of transcription, DNA-templated [ISS]
- positive regulation of chromatin silencing [IMP]
- positive regulation of defense response to virus by host [IMP]
- positive regulation of transcription from RNA polymerase II promoter [IMP]
- protein deacetylation [IMP]
- small molecule metabolic process [TAS]
Gene Ontology Molecular Function
Gene Ontology Cellular Component
- Sin3 complex [IDA, NAS]
- cytoplasm [IDA]
- intercellular bridge [IDA]
- nucleoplasm [IDA, TAS]
- nucleus [IDA, ISS]
Biochemical Activity (Sumoylation)
An interaction is inferred from the biochemical effect of one protein upon another, for example, GTP-GDP exchange activity or phosphorylation of a substrate by a kinase. The bait protein executes the activity on the substrate hit protein. A Modification value is recorded for interactions of this type with the possible values Phosphorylation, Ubiquitination, Sumoylation, Dephosphorylation, Methylation, Prenylation, Acetylation, Deubiquitination, Proteolytic Processing, Glucosylation, Nedd(Rub1)ylation, Deacetylation, No Modification, Demethylation.
Publication
TOPORS functions as a SUMO-1 E3 ligase for chromatin-modifying proteins.
TOPORS is the first example of a protein with both ubiquitin and SUMO-1 E3 ligase activity and has been implicated as a tumor suppressor in several different malignancies. To gain insight into the cellular role of TOPORS, a proteomic screen was performed to identify candidate sumoylation substrates. The results indicate that many of the putative substrates are involved in chromatin ... [more]
Throughput
- Low Throughput
Related interactions
| Interaction | Experimental Evidence Code | Dataset | Throughput | Score | Curated By | Notes |
|---|---|---|---|---|---|---|
| TOPORS SIN3A | Affinity Capture-MS Affinity Capture-MS An interaction is inferred when a bait protein is affinity captured from cell extracts by either polyclonal antibody or epitope tag and the associated interaction partner is identified by mass spectrometric methods. | Low | - | BioGRID | - |
Curated By
- BioGRID