JAB1 ist ein Gen, das durch das Symbol COPS5 kodiert wird. Im Allgemeinen auch bezeichnet als: COP9 signalosome complex subunit 5; SGN5; Jun activation domain-binding protein 1; COPS5; CSN5. JAB1 hat eine Masse von 37.58kDa und eine Aminosäurelänge von 334.
Wir bieten 11 antikörper gegen JAB1, aufgewachsen in Kaninchen, welche geeignet sind für WB, IHC, ELISA, ICC/IF, IP and ChIP mit Proben abgeleitet von Human, Maus und Ratte.
Gen- und Proteininformationen
UniProt Zusammenfassung
Probable protease subunit 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 the SCF-type E3 ligase complexes, leading to decrease the Ubl ligase activity of SCF-type complexes such as SCF, CSA or DDB2. The complex is also involved in phosphorylation of p53/TP53, c-jun/JUN, IkappaBalpha/NFKBIA, ITPK1 and IRF8, 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. In the complex, it probably acts as the catalytic center that mediates the cleavage of Nedd8 from cullins. It however has no metalloprotease activity by itself and requires the other subunits of the CSN complex. Interacts directly with a large number of proteins that are regulated by the CSN complex, confirming a key role in the complex. Promotes the proteasomal degradation of BRSK2.
Entrez Zusammenfassung
The protein encoded by this gene is one of the eight subunits of 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. This protein is reported to be involved in the degradation of cyclin-dependent kinase inhibitor CDKN1B/p27Kip1. It is also known to be an coactivator that increases the specificity of JUN/AP1 transcription factors.
Sequenzähnlichkeiten
Belongs to the peptidase M67A family. CSN5 subfamily.
Zellort
Cytoplasm > Cytosol. Nucleus. Cytoplasm > Perinuclear region. Cytoplasmic vesicle > Secretory vesicle > Synaptic vesicle.
Nuclear localization is diminished in the presence of IFIT3.
