PlantTFDB
PlantRegMap/PlantTFDB v5.0
Plant Transcription Factor Database
Previous version: v3.0 v4.0
Nicotiana attenuata
C3H Family
Species TF ID Description
OIT00616C3H family protein
OIT01677C3H family protein
OIT02311C3H family protein
OIT03014C3H family protein
OIT03382C3H family protein
OIT03393C3H family protein
OIT03618C3H family protein
OIT04739C3H family protein
OIT05074C3H family protein
OIT05379C3H family protein
OIT07202C3H family protein
OIT07624C3H family protein
OIT08443C3H family protein
OIT08563C3H family protein
OIT08585C3H family protein
OIT19040C3H family protein
OIT20923C3H family protein
OIT21234C3H family protein
OIT21632C3H family protein
OIT22204C3H family protein
OIT22277C3H family protein
OIT24549C3H family protein
OIT25718C3H family protein
OIT26143C3H family protein
OIT26319C3H family protein
OIT27177C3H family protein
OIT27594C3H family protein
OIT27598C3H family protein
OIT27939C3H family protein
OIT29517C3H family protein
OIT29633C3H family protein
OIT30652C3H family protein
OIT31155C3H family protein
OIT31831C3H family protein
OIT32300C3H family protein
OIT33268C3H family protein
OIT33763C3H family protein
OIT33870C3H family protein
OIT34326C3H family protein
OIT34441C3H family protein
OIT35215C3H family protein
OIT35671C3H family protein
OIT37162C3H family protein
OIT37279C3H family protein
OIT37292C3H 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