NCBI Accession #
NP_001318437.1
NCBI GenBank Nucleotide #
NM_001337221.1
NCBI Official Full Name
circadian clock associated 1
NCBI Official Symbol
CCA1
NCBI Official Synonym Symbols
AtCCA1; circadian clock associated 1; F19D11.11; MYB-RELATED DNA BINDING PROTEIN
NCBI Protein Information
circadian clock associated 1
NCBI Summary
Encodes a transcriptional repressor that performs overlapping functions with LHY in a regulatory feedback loop that is closely associated with the circadian oscillator of Arabidopsis. Binds to the evening element in the promoter of TOC1 and represses TOC1 transcription. CCA1 and LHY colocalize in the nucleus and form heterodimers in vivo. CCA1 and LHY function synergistically in regulating circadian rhythms of Arabidopsis.
UniProt Protein Name
Protein CCA1
UniProt Synonym Protein Names
MYB-related transcription factor CCA1
UniProt Primary Accession #
P92973
UniProt Secondary Accession #
Q8S8N5
UniProt Related Accession #
P92973
UniProt Comments
Transcription factor involved in the circadian clock and in the phytochrome regulation. Binds to the promoter regions of APRR1/TOC1 and TCP21/CHE to repress their transcription. Binds to the promoter regions of CAB2A and CAB2B to promote their transcription. Represses both LHY and itself.