Plant Transcription Factor Database
Previous version: v3.0
Nicotiana benthamiana
DBB Family
Species TF ID Description
Niben101Scf01258g02009.1DBB family protein
Niben101Scf01433g08025.1DBB family protein
Niben101Scf01679g03017.1DBB family protein
Niben101Scf01983g09009.1DBB family protein
Niben101Scf02594g10016.1DBB family protein
Niben101Scf04528g06003.1DBB family protein
Niben101Scf04664g01002.1DBB family protein
Niben101Scf05311g01008.1DBB family protein
Niben101Scf05536g01001.1DBB family protein
Niben101Scf16585g02003.1DBB 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