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Mutants in protein phosphatase type 2A (PP2A (zeige PPP2R2B Proteine)) also display reduced genome-wide H3 dephosphorylation, and sites of H3 phosphorylation that do not contain heat shock genes remain transcriptionally active during heat shock in PP2A (zeige PPP2R2B Proteine) mutants.
CSN8 is present exclusively as part of the CSN holo-complex, and lack of CSN8 in the mutants leads to CSN instability. Consistent with this, Cullin (zeige CUL5 Proteine) deneddylation is impaired in the csn8(null) mutants.
CSN8/CSN promotes the ubiquitination and degradation of misfolded proteins and protects against cardiac proteotoxicity, and cullin-RING ligases participate in degradation of cytosolic misfolded proteins.
Csn8 exerts profound impacts on hepatic ubiquitin-proteasome system function and is critical to the stability of the pro-apoptotic protein Bim (zeige BCL2L11 Proteine).
CSN8/COP9 signalosome regulates both proteasome-mediated proteolysis and the autophagic-lysosomal pathway, critical to the removal of oxidized proteins in the heart.
Data indicate that a decreased level of Csn8 accelerated cell growth and shortened G1 duration. (zeige COPS5 Proteine)
Likely through regulating the expression of Rab7 (zeige RAB7A Proteine), Csn8/CSN plays a critical role in autophagosome maturation in myocardium.
The Csn8 is essential to the ability of mature hepatocytes to proliferate effectively in response to hepatic injury.
Csn8/CSN plays an essential role in cullin deneddylation, UPS-mediated degradation of a subset of proteins, and the survival of cardiomyocytes
while constitutively photomorphogenic9 (COP9) signalosome (CSN) mutants can complete embryogenesis and are able to germinate, they progressively lose meristem activity upon germination until they become unable to sustain growth
This review provides an overview of the highly complex regulation of CULLIN-RING E3 ubiquitin ligase (zeige MUL1 Proteine) activity by COP9 signalosome (CSN), and the many roles of the CSN in plant development and defense.
SMAP1 (zeige SMAP1 Proteine) interacts with the COP9 signalosome.
study concludes that the COP9 signalosome maintains a precise regulation of eIF3e (zeige EIF3E Proteine) levels, which is necessary for normal development in Arabidopsis
COP9 has a role in ethylene signaling.
COP9 signalosome- and 26S proteasome (zeige Psmd4 Proteine)-dependent regulation of SCFTIR1 accumulation in Arabidopsis
Data indicate that silencing of Csn8 caused an increased growth rate, whereas silencing of Csn5 (zeige COPS5 Proteine) impaired proliferation in HeLa cells.
miR (zeige MLXIP Proteine)-146a expression is up-regulated in a majority of gastric cancers where it targets CARD10 (zeige CARD10 Proteine) and COPS8, inhibiting GPCR (zeige NMUR1 Proteine)-mediated activation of NF-kappaB (zeige NFKB1 Proteine).
analysis of the COP9 signalosome and its common architecture with the 26S proteasome (zeige Psmd4 Proteine) lid and eIF3 (zeige EIF3A Proteine)
DDB2 (zeige DDB2 Proteine) and CSA (zeige ERCC8 Proteine) are each integrated into nearly identical complexes via interaction with DDB1. Both complexes contain cullin 4A (zeige CUL4A Proteine) and Roc1 (zeige RIT1 Proteine) and display ubiquitin ligase activity. They also contain the COP9 signalosome (CSN)
The COP9 signalosome (CSN) controls NF-kappaB (zeige NFKB1 Proteine) by deubiquitinylation of IkappaBalpha (zeige NFKBIA Proteine).
COP9/signalosome increases the efficiency of von Hippel-Lindau protein ubiquitin ligase-mediated hypoxia-inducible factor-alpha ubiquitination
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. Alternatively spliced transcript variants encoding distinct isoforms have been observed.
, Cop9 signalosome subunit 8
, drosophila COP9 signalosome homolog 8
, lethal (2) SH1829
, COP9 signalosome complex subunit 8
, signalosome subunit 8
, COP9 signalosome subunit 8
, MGC80215 protein
, COP9 constitutive photomorphogenic homolog subunit 8 (Arabidopsis)
, COP9 (constitutive photomorphogenic) homolog, subunit 8
, COP9 homolog
, JAB1-containing signalosome subunit 8
, COP9 constitutive photomorphogenic homolog subunit 8