CSN3 is one of eight subunits (CSN1 to 8) of the highly conserved COP9 signalsome (CSN) complex originally identified as a regulator of light-mediated development in Arabidopsis. Characterization of CSN from yeast to mammals reveals its function as a modulator of signal transduction pathways involved in a variety of cellular and developmental processes. One of the major functions of the CSN is the regulation of protein degradation via intersection with the ubiquitin-proteasome pathway and regulation of E3-ubiquitin ligases. The CSN also possesses kinase activity. CSN3 is the kinase associated with the CSN complex that phosphorylates signal transducers such as I-kappa-Balpha, p105, and c-Jun. Human CSN3 maps to the Smith-Magenis syndrome locus. Microdeletions in this locus results in mental retardation, skeletal abnormalities, sleep disorder, and neurobehavior anomalies.
Alternative names for
CSN3 Antibody include COP9 signalsome complex subunit3 antibody, signalsome subunit 3 antibody, SGN3 antibody, JAB1-containing signalsome subunit 3 antibody, COPS3 antibody.