PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Citrullus lanatus
C3H Family
Species TF ID Description
Cla002235C3H family protein
Cla002582C3H family protein
Cla003307C3H family protein
Cla003898C3H family protein
Cla004354C3H family protein
Cla004489C3H family protein
Cla004787C3H family protein
Cla005152C3H family protein
Cla005475C3H family protein
Cla005477C3H family protein
Cla007686C3H family protein
Cla007961C3H family protein
Cla008443C3H family protein
Cla008745C3H family protein
Cla009572C3H family protein
Cla009634C3H family protein
Cla010708C3H family protein
Cla011206C3H family protein
Cla011237C3H family protein
Cla011694C3H family protein
Cla011852C3H family protein
Cla012262C3H family protein
Cla013366C3H family protein
Cla013513C3H family protein
Cla014264C3H family protein
Cla015232C3H family protein
Cla015383C3H family protein
Cla016222C3H family protein
Cla016728C3H family protein
Cla016918C3H family protein
Cla017270C3H family protein
Cla017501C3H family protein
Cla017537C3H family protein
Cla020082C3H family protein
Cla021721C3H family protein
Cla023197C3H family protein
C3H Family Introduction

One gene isolated by virtual subtraction is PEI. It encodes a protein containing a Cys3His zinc finger domain associated with a number of animal and fungal transcription factors. In situ hybridization results showed that PEI1 is expressed throughout the embryo from globular to late cotyledon stage. Transgenic Arabidopsis plants expressing a PEI1 antisense gene produced white seeds in which embryo development did not progress through heart stage. Aberrant embryos failed to form cotyledons, but the embryonic root appeared to be normal. Aberrant embryos did not turn green, and the expression of genes involved in photomorphogenesis was drastically attenuated. In culture, aberrant embryos did not form true leaves, but root formation was apparently normal. These results suggest that PEI1 is an embryo-specific transcription factor that plays an important role during Arabidopsis embryogenesis, functioning primarily in the apical domain of the embryo.

we used a random binding site selection method to show that recombinant PEI1 protein purified from Escherichia coli can bind to specific DNA sequences. This DNA binding activity supports the prediction that PEI1 is an embryo-specific transcription factor.

Z Li and T L Thomas.
PEI1, an embryo-specific zinc finger protein gene required for heart-stage embryo formation in Arabidopsis.
Plant Cell, 1998. 10(3): p. 383-98.
PMID: 9501112