Aliases for COPS4 Gene
- COP9 (Constitutive Photomorphogenic, Arabidopsis, Homolog) Subunit 4 2
- COP9 Constitutive Photomorphogenic Homolog Subunit 4 (Arabidopsis) 2
- COP9 Constitutive Photomorphogenic-Like Protein Subunit 4 3
- COP9 Constitutive Photomorphogenic Homolog Subunit 4 3
- Testis Tissue Sperm-Binding Protein Li 42a 3
- COPS4 5
External Ids for COPS4 Gene
Previous GeneCards Identifiers for COPS4 Gene
This gene encodes one of eight subunits composing COP9 signalosome, a highly conserved protein complex that functions as an important regulator in multiple signaling pathways. The structure and function of COP9 signalosome is similar to that of the 19S regulatory particle of 26S proteasome. COP9 signalosome has been shown to interact with SCF-type E3 ubiquitin ligases and act as a positive regulator of E3 ubiquitin ligases. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]
GeneCards Summary for COPS4 Gene
COPS4 (COP9 Signalosome Subunit 4) is a Protein Coding gene. Diseases associated with COPS4 include Xeroderma Pigmentosum, Complementation Group E and Retinitis Pigmentosa 32. Among its related pathways are Clathrin-mediated endocytosis and Transcription-Coupled Nucleotide Excision Repair (TC-NER). An important paralog of this gene is PSMD12.
UniProtKB/Swiss-Prot Summary for COPS4 Gene
Component of the COP9 signalosome complex (CSN), a complex involved in various cellular and developmental processes. The CSN complex is an essential regulator of the ubiquitin (Ubl) conjugation pathway by mediating the deneddylation of the cullin subunits of SCF-type E3 ligase complexes, leading to decrease the Ubl ligase activity of SCF-type complexes such as SCF, CSA or DDB2. Also involved in the deneddylation of non-cullin subunits such as STON2. The complex is also involved in phosphorylation of p53/TP53, c-jun/JUN, IkappaBalpha/NFKBIA, ITPK1, IRF8/ICSBP and SNAPIN, possibly via its association with CK2 and PKD kinases. CSN-dependent phosphorylation of TP53 and JUN promotes and protects degradation by the Ubl system, respectively.