COPS2 Antibody – Mouse Monoclonal

COPS2: Essential 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, c-jun/JUN, IkappaBalpha/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 early stage of neuronal differentiation via its interaction with NIF3L1. Belongs to the CSN2 family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Transcription, coactivator/corepressor; Nuclear receptor co-regulator

Chromosomal Location of Human Ortholog: 15q21.2

Cellular Component: signalosome; cytoplasm

Molecular Function: protein binding; signal transducer activity; transcription corepressor activity

Biological Process: transcription from RNA polymerase II promoter; neuron differentiation; cell proliferation; cullin deneddylation; negative regulation of transcription from RNA polymerase II promoter; signal transduction