PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Spirodela polyrhiza
C3H Family
Species TF ID Description
Spipo0G0181900C3H family protein
Spipo11G0044200C3H family protein
Spipo12G0001100C3H family protein
Spipo12G0001200C3H family protein
Spipo12G0033800C3H family protein
Spipo12G0038200C3H family protein
Spipo14G0014800C3H family protein
Spipo19G0022600C3H family protein
Spipo1G0113500C3H family protein
Spipo21G0026900C3H family protein
Spipo21G0031600C3H family protein
Spipo22G0011600C3H family protein
Spipo23G0034900C3H family protein
Spipo24G0011700C3H family protein
Spipo26G0015800C3H family protein
Spipo26G0017100C3H family protein
Spipo27G0011400C3H family protein
Spipo27G0019400C3H family protein
Spipo29G0019800C3H family protein
Spipo2G0069900C3H family protein
Spipo30G0004800C3H family protein
Spipo3G0028100C3H family protein
Spipo4G0050000C3H family protein
Spipo5G0000500C3H family protein
Spipo5G0015600C3H family protein
Spipo5G0060700C3H family protein
Spipo6G0045700C3H family protein
Spipo6G0065000C3H family protein
Spipo7G0056200C3H family protein
Spipo8G0039000C3H family protein
Spipo9G0013000C3H 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