PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Dichanthelium oligosanthes
C3H Family
Species TF ID Description
Do000531.1C3H family protein
Do000835.1C3H family protein
Do001454.1C3H family protein
Do002984.1C3H family protein
Do003214.1C3H family protein
Do003424.1C3H family protein
Do003457.1C3H family protein
Do004618.1C3H family protein
Do004747.1C3H family protein
Do005210.1C3H family protein
Do006326.1C3H family protein
Do007027.1C3H family protein
Do008082.1C3H family protein
Do009506.1C3H family protein
Do011519.1C3H family protein
Do012762.1C3H family protein
Do013615.1C3H family protein
Do014210.1C3H family protein
Do014304.1C3H family protein
Do015230.1C3H family protein
Do015255.1C3H family protein
Do015990.1C3H family protein
Do017074.1C3H family protein
Do017526.1C3H family protein
Do017722.1C3H family protein
Do018203.1C3H family protein
Do018807.1C3H family protein
Do019191.1C3H family protein
Do019815.1C3H family protein
Do020011.1C3H family protein
Do020212.1C3H family protein
Do020641.1C3H family protein
Do023533.1C3H family protein
Do023798.1C3H family protein
Do028322.1C3H family protein
Do029743.1C3H 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