PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Lactuca sativa
C3H Family
Species TF ID Description
Lsa000062C3H family protein
Lsa000445C3H family protein
Lsa000968C3H family protein
Lsa001317C3H family protein
Lsa001917C3H family protein
Lsa002830C3H family protein
Lsa003747C3H family protein
Lsa004479C3H family protein
Lsa004805C3H family protein
Lsa004939C3H family protein
Lsa005230C3H family protein
Lsa005298C3H family protein
Lsa006210C3H family protein
Lsa006334C3H family protein
Lsa006833C3H family protein
Lsa007589C3H family protein
Lsa007939C3H family protein
Lsa008509C3H family protein
Lsa009970C3H family protein
Lsa010052C3H family protein
Lsa010703C3H family protein
Lsa010821C3H family protein
Lsa011299C3H family protein
Lsa011617C3H family protein
Lsa011660C3H family protein
Lsa011801C3H family protein
Lsa013322C3H family protein
Lsa013453C3H family protein
Lsa013457C3H family protein
Lsa014160C3H family protein
Lsa014741C3H family protein
Lsa015474C3H family protein
Lsa015724C3H family protein
Lsa018948C3H family protein
Lsa001821C3H family protein
Lsa004147C3H family protein
Lsa015107C3H 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