PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Phalaenopsis equestris
C3H Family
Species TF ID Description
PEQU_03806C3H family protein
PEQU_04108C3H family protein
PEQU_04794C3H family protein
PEQU_05030C3H family protein
PEQU_05337C3H family protein
PEQU_05338C3H family protein
PEQU_05393C3H family protein
PEQU_05515C3H family protein
PEQU_05800C3H family protein
PEQU_06070C3H family protein
PEQU_06271C3H family protein
PEQU_08281C3H family protein
PEQU_11093C3H family protein
PEQU_12139C3H family protein
PEQU_12439C3H family protein
PEQU_12630C3H family protein
PEQU_13937C3H family protein
PEQU_15682C3H family protein
PEQU_16233C3H family protein
PEQU_17158C3H family protein
PEQU_18573C3H family protein
PEQU_18781C3H family protein
PEQU_19568C3H family protein
PEQU_19932C3H family protein
PEQU_23731C3H family protein
PEQU_24366C3H family protein
PEQU_25229C3H family protein
PEQU_27271C3H family protein
PEQU_29298C3H family protein
PEQU_31483C3H family protein
PEQU_31484C3H family protein
PEQU_39193C3H family protein
PEQU_39687C3H family protein
PEQU_40925C3H family protein
PEQU_42257C3H 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