NCBI Accession #
NP_001325091.1
NCBI GenBank Nucleotide #
NM_001337214.1
NCBI Official Full Name
pseudo-response regulator 9
NCBI Official Symbol
PRR9
NCBI Official Synonym Symbols
APRR9; Arabidopsis pseudo-response regulator 9; F19D11.7; pseudo-response regulator 9; TL1; TOC1-LIKE PROTEIN 1
NCBI Protein Information
pseudo-response regulator 9
NCBI Summary
Pseudo-response regulator PRR9. Involved in clock function. PRR7 and PRR9 are partially redundant essential components of a temperature-sensitive circadian system. CCA1 and LHY had a positive effect on PRR9. Interact with TOC1 in a yeast two-hybrid assay. Acts as transcriptional repressor of CCA1 and LHY.
UniProt Protein Name
Two-component response regulator-like APRR9
UniProt Synonym Protein Names
Pseudo-response regulator 9
UniProt Primary Accession #
Q8L500
UniProt Secondary Accession #
O81035; Q9LKL1
UniProt Related Accession #
Q8L500
UniProt Comments
Transcriptional repressor of CCA1 and LHY, and positive regulator of LWD1 and LWD2 expression. Controls photoperiodic flowering response and temperature compensation. Involved in the positive and negative feedback loops of the circadian clock. Expression of several members of the ARR-like family is controlled by circadian rhythm. Regulated at the transcriptional level by a corepressor complex consisting of ELF4, ELF3, and LUX. APRR9, APRR7, and APRR5 coordinately act on the upstream region of the target genes to repress their expression from noon until midnight. 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.