NCBI Accession #
NP_200946.1
NCBI GenBank Nucleotide #
NM_125531.4
NCBI Official Full Name
CCT motif -containing response regulator protein
NCBI Official Symbol
TOC1
NCBI Official Synonym Symbols
APRR1; AtTOC1; MFB13.13; MFB13_13; PRR1; PSEUDO-RESPONSE REGULATOR 1; TIMING OF CAB EXPRESSION 1
NCBI Protein Information
CCT motif -containing response regulator protein
NCBI Summary
Pseudo response regulator involved in the generation of circadian rhythms. TOC1 appears to shorten the period of circumnutation speed. TOC1 contributes to the plant fitness (carbon fixation, biomass) by influencing the circadian clock period. PRR3 may increase the stability of TOC1 by preventing interactions between TOC1 and the F-box protein ZTL. Expression of TOC1 is correlated with rhythmic changes in chromatin organization.
UniProt Synonym Gene Names
AIP1; TOC1
UniProt Protein Name
Two-component response regulator-like APRR1
UniProt Synonym Protein Names
ABI3-interacting protein 1; Pseudo-response regulator 1; Timing of CAB expression 1
UniProt Primary Accession #
Q9LKL2
UniProt Secondary Accession #
Q9M4B7
UniProt Related Accession #
Q9LKL2
UniProt Comments
Controls photoperiodic flowering response. Component of the circadian clock. Expression of several members of the ARR-like family is controlled by circadian rhythm. The particular coordinated sequential expression of APRR9, APRR7, APRR5, APRR3 and APPR1 result to circadian waves that may be at the basis of the endogenous circadian clock. Positive regulator of CCA1 and LHY expression.