PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Utricularia gibba
C3H Family
Species TF ID Description
678293190C3H family protein
678294618C3H family protein
678297269C3H family protein
678308628C3H family protein
678308706C3H family protein
678313764C3H family protein
678323204C3H family protein
678336555C3H family protein
678345199C3H family protein
678355236C3H family protein
678364209C3H family protein
678371275C3H family protein
678375690C3H family protein
678381499C3H family protein
678393780C3H family protein
678398661C3H family protein
678399052C3H family protein
678405093C3H family protein
678405132C3H family protein
678410082C3H family protein
678418908C3H family protein
678430513C3H family protein
678435630C3H family protein
678440408C3H family protein
678445343C3H family protein
678449019C3H family protein
678450631C3H family protein
678453075C3H family protein
678453243C3H family protein
678455862C3H family protein
678457245C3H family protein
678457671C3H family protein
678457698C3H family protein
678463841C3H family protein
678463952C3H family protein
678464901C3H family protein
678467421C3H family protein
678467445C3H family protein
678469938C3H 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