PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Arachis hypogaea
C3H Family
Species TF ID Description
Ahy003435C3H family protein
Ahy007332C3H family protein
Ahy007831C3H family protein
Ahy007897C3H family protein
Ahy008144C3H family protein
Ahy009075C3H family protein
Ahy009128C3H family protein
Ahy010166C3H family protein
Ahy010465C3H family protein
Ahy012633C3H family protein
Ahy013186C3H family protein
Ahy013797C3H family protein
Ahy013842C3H family protein
Ahy014630C3H family protein
Ahy014664C3H family protein
Ahy014697C3H family protein
Ahy016187C3H family protein
Ahy016262C3H family protein
Ahy016943C3H family protein
Ahy017682C3H family protein
Ahy017783C3H family protein
Ahy018675C3H family protein
Ahy019376C3H family protein
Ahy019957C3H family protein
Ahy020113C3H family protein
Ahy020256C3H family protein
Ahy020631C3H family protein
Ahy022620C3H family protein
Ahy013280C3H family protein
Ahy015069C3H family protein
Ahy018860C3H family protein
Ahy020015C3H 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