PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Kalanchoe laxiflora
DBB Family
Species TF ID Description
Kaladp0003s0056.2.pDBB family protein
Kaladp0016s0089.1.pDBB family protein
Kaladp0016s0254.1.pDBB family protein
Kaladp0016s0254.2.pDBB family protein
Kaladp0038s0084.1.pDBB family protein
Kaladp0038s0084.2.pDBB family protein
Kaladp0038s0084.3.pDBB family protein
Kaladp0046s0101.1.pDBB family protein
Kaladp0047s0019.1.pDBB family protein
Kaladp0048s0366.1.pDBB family protein
Kaladp0048s0366.2.pDBB family protein
Kaladp0060s0038.1.pDBB family protein
Kaladp0067s0120.1.pDBB family protein
Kaladp0067s0120.2.pDBB family protein
Kaladp0100s0033.1.pDBB family protein
Kaladp0192s0026.1.pDBB family protein
Kaladp0192s0026.2.pDBB 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