BAIT
TOPORS
LUN, P53BP3, RP31, TP53BPL, RP11-205M20.5
topoisomerase I binding, arginine/serine-rich, E3 ubiquitin protein ligase
GO Process (16)
GO Function (6)
GO Component (11)
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
Homo sapiens
PREY
UBC
HMG20
ubiquitin C
GO Process (75)
GO Function (3)
GO Component (6)
Gene Ontology Biological Process
- DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest [TAS]
- DNA repair [TAS]
- Fc-epsilon receptor signaling pathway [TAS]
- G1/S transition of mitotic cell cycle [TAS]
- G2/M transition of mitotic cell cycle [TAS]
- I-kappaB kinase/NF-kappaB signaling [TAS]
- JNK cascade [TAS]
- MyD88-dependent toll-like receptor signaling pathway [TAS]
- MyD88-independent toll-like receptor signaling pathway [TAS]
- Notch receptor processing [TAS]
- Notch signaling pathway [TAS]
- RNA metabolic process [TAS]
- T cell receptor signaling pathway [TAS]
- TRIF-dependent toll-like receptor signaling pathway [TAS]
- activation of MAPK activity [TAS]
- anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process [TAS]
- antigen processing and presentation of exogenous peptide antigen via MHC class I [TAS]
- antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent [TAS]
- antigen processing and presentation of peptide antigen via MHC class I [TAS]
- apoptotic process [TAS]
- apoptotic signaling pathway [TAS]
- carbohydrate metabolic process [TAS]
- cellular response to hypoxia [TAS]
- cytokine-mediated signaling pathway [TAS]
- endosomal transport [TAS]
- epidermal growth factor receptor signaling pathway [TAS]
- fibroblast growth factor receptor signaling pathway [TAS]
- gene expression [TAS]
- glucose metabolic process [TAS]
- glycogen biosynthetic process [TAS]
- innate immune response [TAS]
- intracellular transport of virus [TAS]
- ion transmembrane transport [TAS]
- mRNA metabolic process [TAS]
- membrane organization [TAS]
- mitotic cell cycle [TAS]
- negative regulation of apoptotic process [TAS]
- negative regulation of epidermal growth factor receptor signaling pathway [TAS]
- negative regulation of transcription from RNA polymerase II promoter [TAS]
- negative regulation of transforming growth factor beta receptor signaling pathway [TAS]
- negative regulation of type I interferon production [TAS]
- negative regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle [TAS]
- neurotrophin TRK receptor signaling pathway [TAS]
- nucleotide-binding domain, leucine rich repeat containing receptor signaling pathway [TAS]
- nucleotide-binding oligomerization domain containing signaling pathway [TAS]
- positive regulation of I-kappaB kinase/NF-kappaB signaling [TAS]
- positive regulation of NF-kappaB transcription factor activity [TAS]
- positive regulation of apoptotic process [TAS]
- positive regulation of transcription from RNA polymerase II promoter [TAS]
- positive regulation of type I interferon production [TAS]
- positive regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle [TAS]
- protein polyubiquitination [TAS]
- regulation of apoptotic process [TAS]
- regulation of transcription from RNA polymerase II promoter in response to hypoxia [TAS]
- regulation of type I interferon production [TAS]
- regulation of ubiquitin-protein ligase activity involved in mitotic cell cycle [TAS]
- small molecule metabolic process [TAS]
- stress-activated MAPK cascade [TAS]
- toll-like receptor 10 signaling pathway [TAS]
- toll-like receptor 2 signaling pathway [TAS]
- toll-like receptor 3 signaling pathway [TAS]
- toll-like receptor 4 signaling pathway [TAS]
- toll-like receptor 5 signaling pathway [TAS]
- toll-like receptor 9 signaling pathway [TAS]
- toll-like receptor TLR1:TLR2 signaling pathway [TAS]
- toll-like receptor TLR6:TLR2 signaling pathway [TAS]
- toll-like receptor signaling pathway [TAS]
- transcription initiation from RNA polymerase II promoter [TAS]
- transcription, DNA-templated [TAS]
- transforming growth factor beta receptor signaling pathway [TAS]
- transmembrane transport [TAS]
- viral life cycle [TAS]
- viral process [TAS]
- viral protein processing [TAS]
- virion assembly [TAS]
Gene Ontology Molecular Function
Gene Ontology Cellular Component
Homo sapiens
Biochemical Activity (Ubiquitination)
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 an E3 ubiquitin ligase with specific E2 enzymes and ubiquitinates p53.
The human topoisomerase I- and p53-binding protein topors contains a highly conserved, N-terminal C3HC4-type RING domain that is homologous to the RING domains of known E3 ubiquitin ligases. We demonstrate that topors functions in vitro as a RING-dependent E3 ubiquitin ligase with the E2 enzymes UbcH5a, UbcH5c, and UbcH6 but not with UbcH7, CDC34, or UbcH2b. Additional studies indicate that ... [more]
J. Biol. Chem. Aug. 27, 2004; 279(35);36440-4 [Pubmed: 15247280]
Throughput
- Low Throughput
Additional Notes
- Topors forms poly-ubiquitin chains in vitro
Curated By
- BioGRID