NCBI Accession #
NP_568658.1
NCBI GenBank Nucleotide #
NM_123990.3
NCBI Official Full Name
cullin4
NCBI Official Symbol
CUL4
NCBI Official Synonym Symbols
ATCUL4; cullin4; MDE13.3; MDE13_3
NCBI Protein Information
cullin4
NCBI Summary
Arabidopsis CULLIN4 (CUL4) forms an E3 ubiquitin ligase with the CDD complex and a common catalytic subunit RBX1 in mediating light control of development. This CUL4-based E3 ligase is essential for the repression of photomorphogenesis. The partial loss of CUL4 function resulted in a constitutive photomorphogenic phenotype with respect to morphogenesis and light-regulated gene expression. CUL4 exhibits a synergistic genetic interaction with COP10 and DET1.
UniProt Synonym Gene Names
AtCUL4
UniProt Protein Name
Cullin-4
UniProt Primary Accession #
Q8LGH4
UniProt Secondary Accession #
Q84LL5; Q8RWT9; Q9FGP0
UniProt Related Accession #
Q8LGH4
UniProt Comments
Component of the CUL4-RBX1-CDD (COP10-DDB1a-DET1) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Participates in the CDD complex to light-mediated control of development. May repress photomorphogenesis through enhancing COP1 E3 ubiquitin-protein ligase activity. Acts together with the CUL4-DDB1-COP1-SPA E3 ubiquitin-protein ligase complexes in the repression of photomorphogenesis and flowering time. Component ot the CUL4-RBX1-DDB1-PRL1 E3 ubiquitin-protein ligase complex which mediates ubiquitination and subsequent degradation of AKIN10. Component of the CUL4-RBX1-DDB1-DWA1/DWA2 E3 ubiquitin-protein ligase complex that acts as negative regulator in abscisic acid (ABA) signaling and may target ABI5 for degradation.