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. The complex is also involved in phosphorylation of p53/TP53, JUN, I-kappa-B-alpha/NFKBIA, ITPK1 and IRF8/ICSBP, 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. Involved in protein deneddylation. Located in nucleoplasm. Part of COP9 signalosome.
Background References
1. Wang J et al. CSN7B defines a variant COP9 signalosome complex with distinct function in DNA damage response. Cell Rep. 2021 Jan
Western blot analysis of CSN7b on different lysates with Rabbit anti-CSN7b antibody (HA722758) at 1/1,000 dilution.
Lane 1: 293T cell lysate Lane 2: HeLa cell lysate Lane 3: Jurkat cell lysate Lane 4: HL-60 cell lysate Lane 5: HT-29 cell lysate Lane 6: RAW264.7 cell lysate Lane 7: NIH/3T3 cell lysate Lane 8: C6 cell lysate Lane 9: PC-12 cell lysate Lane 10: Mouse testis tissue lysate Lane 11: Rat testis tissue lysate
Lysates/proteins at 20 µg/Lane.
Predicted band size: 30 kDa Observed band size: 30 kDa
Exposure time: 30 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA722758) at 1/1,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
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