Plant Transcription Factor Database
Previous version: v3.0
Raphanus raphanistrum
DBB Family
Species TF ID Description
RrC1136_p9DBB family protein
RrC1470_p3DBB family protein
RrC14814_p1DBB family protein
RrC17484_p1DBB family protein
RrC1838_p3DBB family protein
RrC18714_p1DBB family protein
RrC2591_p4DBB family protein
RrC2688_p2DBB family protein
RrC29514_p1DBB family protein
RrC2980_p1DBB family protein
RrC3934_p1DBB family protein
RrC4246_p2DBB family protein
RrC4676_p4DBB family protein
RrC550_p4DBB family protein
RrC604_p8DBB family protein
RrC8034_p2DBB family protein
RrC8915_p2DBB family protein
RrC931_p4DBB family protein
DBB Family Introduction

In this study, a small subfamily of double B-box zinc finger (DBB, DOUBLE B-BOX) genes, encoding eight putative transcription factors, were characterized with reference to the circadian rhythm and the early photomorphogenic regulation of hypocotyl elongation in response to light signals. Among these, it was found that the transcriptions of five DBB genes were under the control of circadian rhythm. To gain insight into the physiological roles of these putative transcription factors, forward and reverse genetic studies were carried out. The results suggested that they are commonly implicated in light signal transduction during early photomorphogenesis, however, their functions are not totally redundant, as judged by the fact that their circadian-expression profiles (or phases) were distinctive from each other, and by the fact that some DBBs (named DBB1a, DBB1b, STO, and STH) were apparently implicated in light signal transduction in a negative manner, whereas another (named DBB3) was implicated in a positive manner with regard to light-induced inhibition of elongation of hypocotyls.

Kumagai T, Ito S, Nakamichi N, Niwa Y, Murakami M, Yamashino T, Mizuno T.
The common function of a novel subfamily of B-Box zinc finger proteins with reference to circadian-associated events in Arabidopsis thaliana.
Biosci Biotechnol Biochem, 2008. 72(6): p. 1539-49.
PMID: 18540109