PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Aegilops tauschii
C3H Family
Species TF ID Description
EMT01168C3H family protein
EMT01357C3H family protein
EMT02298C3H family protein
EMT02379C3H family protein
EMT02450C3H family protein
EMT02642C3H family protein
EMT04775C3H family protein
EMT05816C3H family protein
EMT05990C3H family protein
EMT05991C3H family protein
EMT06016C3H family protein
EMT08668C3H family protein
EMT09507C3H family protein
EMT09537C3H family protein
EMT10784C3H family protein
EMT10785C3H family protein
EMT10786C3H family protein
EMT10787C3H family protein
EMT10788C3H family protein
EMT13776C3H family protein
EMT14529C3H family protein
EMT17540C3H family protein
EMT17685C3H family protein
EMT18734C3H family protein
EMT19562C3H family protein
EMT21031C3H family protein
EMT21128C3H family protein
EMT21637C3H family protein
EMT25639C3H family protein
EMT27321C3H family protein
EMT28341C3H family protein
EMT30632C3H family protein
EMT31981C3H family protein
EMT32188C3H family protein
EMT33668C3H 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