Plant Transcription Factor Database
Previous version: v3.0
Arabidopsis thaliana
DBB Family
Species TF ID Description
AT1G06040.1DBB family protein
AT1G06040.2DBB family protein
AT1G75540.1salt tolerance homolog2
AT1G78600.1light-regulated zinc finger protein 1
AT1G78600.2light-regulated zinc finger protein 1
AT2G21320.1DBB family protein
AT2G24790.2CONSTANS-like 3
AT2G31380.1salt tolerance homologue
AT2G47890.2B-box type zinc finger protein with CCT domain
AT4G10240.1DBB family protein
AT4G38960.1DBB family protein
AT4G38960.3DBB family protein
AT4G39070.1DBB family protein
AT5G15840.2B-box type zinc finger protein with CCT domain
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