Plant Transcription Factor Database
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Saccharum officinarum
C3H Family
Species TF ID Description
Sof000761C3H family protein
Sof001355C3H family protein
Sof001513C3H family protein
Sof003204C3H family protein
Sof004031C3H family protein
Sof005676C3H family protein
Sof007333C3H family protein
Sof007625C3H family protein
Sof007833C3H family protein
Sof007861C3H family protein
Sof008355C3H family protein
Sof009665C3H family protein
Sof011559C3H family protein
Sof012906C3H family protein
Sof013049C3H family protein
Sof013684C3H family protein
Sof013709C3H family protein
Sof013742C3H family protein
Sof014405C3H family protein
Sof014723C3H family protein
Sof015594C3H family protein
Sof015792C3H family protein
Sof016044C3H family protein
Sof016204C3H family protein
Sof016639C3H family protein
Sof017204C3H family protein
Sof017939C3H family protein
Sof018339C3H family protein
Sof020395C3H 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