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COP9 signalosome: Discovery, conservation, activity, and function
Author(s) -
Qin Nanxun,
Xu Dongqing,
Li Jigang,
Deng Xing Wang
Publication year - 2020
Publication title -
journal of integrative plant biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.734
H-Index - 83
eISSN - 1744-7909
pISSN - 1672-9072
DOI - 10.1111/jipb.12903
Subject(s) - cop9 signalosome , cullin , ubiquitin ligase , biology , microbiology and biotechnology , function (biology) , ubiquitin , genetics , protein subunit , multiprotein complex , gene , mutant , biochemistry , protease , peptide hydrolases , enzyme
The COP9 signalosome (CSN) is a conserved protein complex, typically composed of eight subunits (designated as CSN1 to CSN8) in higher eukaryotes such as plants and animals, but of fewer subunits in some lower eukaryotes such as yeasts. The CSN complex is originally identified in plants from a genetic screen for mutants that mimic light‐induced photomorphogenic development when grown in the dark. The CSN complex regulates the activity of cullin‐RING ligase (CRL) families of E3 ubiquitin ligase complexes, and play critical roles in regulating gene expression, cell proliferation, and cell cycle. This review aims to summarize the discovery, composition, structure, and function of CSN in the regulation of plant development in response to external (light and temperature) and internal cues (phytohormones).