NCBI Accession #
NP_566561.2
NCBI GenBank Nucleotide #
NM_112561.5
NCBI Official Full Name
response regulator 1
NCBI Official Synonym Symbols
ARR1; response regulator 1
NCBI Protein Information
response regulator 1
NCBI Summary
Encodes an Arabidopsis response regulator (ARR) protein that acts in concert with other type-B ARRs in the cytokinin signaling pathway. Also involved in cytokinin-dependent inhibition of hypocotyl elongation and cytokinin-dependent greening and shooting in tissue culture.
UniProt Protein Name
Two-component response regulator ARR1
UniProt Primary Accession #
Q940D0
UniProt Secondary Accession #
Q9LIB7; Q9ZWK0; B9DFS4
UniProt Related Accession #
Q940D0
UniProt Comments
Transcriptional activator that binds specifically to the DNA sequence 5'-[AG]GATT-3'. Functions as a response regulator involved in His-to-Asp phosphorelay signal transduction system. Phosphorylation of the Asp residue in the receiver domain activates the ability of the protein to promote the transcription of target genes. Could directly activate some type-A response regulators in response to cytokinins. Regulates SHY2 by binding to its promoter (PubMed:19039136). Involved in the root-meristem size determination through the regulation of cell differentiation (PubMed:17363254).