DESCRIPTION:Tajima et al. 2004: In Arabidopsis thaliana, a Histidine-to-Aspartate (His-->Asp) phosphorelay is involved in the signal transduction for propagation of certain stimuli, such as plant hormones. Through the phosphorelay, the type-B phospho-accepting response regulator (ARR) family members serve as DNA-binding transcriptional regulators, whose activities are most likely regulated by phosphorylation/dephosphorylation.
Members of this family
SHOULD possess G2-like Myb_DNA-binding Response_reg domains
SHOULD NOT possess CCT domain
References
Aoyama, T; Oka, A. 2003. Cytokinin signal transduction in plant cells. J. Plant Res. 116(3):221-31 PUBMEDID:12836044
D'Agostino, IB; Kieber, JJ. 1999. Phosphorelay signal transduction: the emerging family of plant response regulators. Trends Biochem. Sci. 24(11):452-6 PUBMEDID:10542414
Kakimoto, T. 2003. Perception and signal transduction of cytokinins. Annu Rev Plant Biol 54:605-27 PUBMEDID:14503005
Tajima, Y; Imamura, A; Kiba, T; Amano, Y; Yamashino, T; Mizuno, T. 2004. Comparative studies on the type-B response regulators revealing their distinctive properties in the His-to-Asp phosphorelay signal transduction of Arabidopsis thaliana. Plant Cell Physiol. 45(1):28-39 PUBMEDID:14749483