PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Sisymbrium irio
C3H Family
Species TF ID Description
676706988C3H family protein
676708078C3H family protein
676710612C3H family protein
676713788C3H family protein
676715710C3H family protein
676720476C3H family protein
676721792C3H family protein
676723302C3H family protein
676724592C3H family protein
676724692C3H family protein
676725582C3H family protein
676728556C3H family protein
676731062C3H family protein
676732512C3H family protein
676733470C3H family protein
676734562C3H family protein
676735002C3H family protein
676735566C3H family protein
676736814C3H family protein
676737404C3H family protein
676738006C3H family protein
676739336C3H family protein
676740844C3H family protein
676742370C3H family protein
676744298C3H family protein
676744860C3H family protein
676745734C3H family protein
676747510C3H family protein
676748384C3H family protein
676749492C3H family protein
676751120C3H family protein
676753330C3H family protein
676754478C3H family protein
676761478C3H family protein
676763560C3H family protein
676768784C3H family protein
676771770C3H family protein
676776022C3H family protein
676776610C3H family protein
676776928C3H family protein
676782122C3H family protein
676783504C3H family protein
676783506C3H family protein
676783642C3H family protein
676783722C3H family protein
676783750C3H family protein
676783752C3H family protein
676783754C3H family protein
676783758C3H family protein
676785062C3H family protein
676788138C3H family protein
676789890C3H family protein
676790482C3H 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