PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Picea glauca
C3H Family
Species TF ID Description
Pgl000353C3H family protein
Pgl000373C3H family protein
Pgl002837C3H family protein
Pgl003179C3H family protein
Pgl003293C3H family protein
Pgl003644C3H family protein
Pgl003891C3H family protein
Pgl003923C3H family protein
Pgl003946C3H family protein
Pgl004142C3H family protein
Pgl004464C3H family protein
Pgl004590C3H family protein
Pgl004653C3H family protein
Pgl006256C3H family protein
Pgl008816C3H family protein
Pgl008883C3H family protein
Pgl009057C3H family protein
Pgl009089C3H family protein
Pgl009106C3H family protein
Pgl011359C3H family protein
Pgl011788C3H family protein
Pgl012169C3H family protein
Pgl014797C3H 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