Analysis of functional domains and binding sequences of Arabidopsis transcription factor ESR1

Analysis of functional domains and binding sequences of Arabidopsis transcription factor ESR1

The Arabidopsis ESR1 is thought to be a key gene for commitment to in vitro shoot regeneration in tissue culture. The ESR1 gene encodes a putative transcription factor. We examined the DNA-binding potential for specific sequences. Recombinant ESR1 protein specifically bound to the GCC box, known as...

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Veröffentlicht in:Plant Biotechnology 2006, Vol.23(3), pp.303-308
Hauptverfasser: Banno, Hiroharu, Mase, Hiromi, Maekawa, Koji
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AP2/ERF protein
ESR1
shoot regeneration
transcription factor
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container_title Plant Biotechnology
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creator Banno, Hiroharu
Mase, Hiromi
Maekawa, Koji
description The Arabidopsis ESR1 is thought to be a key gene for commitment to in vitro shoot regeneration in tissue culture. The ESR1 gene encodes a putative transcription factor. We examined the DNA-binding potential for specific sequences. Recombinant ESR1 protein specifically bound to the GCC box, known as the ethylene-responsive element. In addition, ESR1 was localized to the nucleus when expressed in onion epidermal cells. Deletion experiments revealed that the DNA-binding domain or the C-terminal region of ESR1 is essential for ESR1 overexpression to enhance shoot regeneration. The C-terminal region may be involved in transcriptional regulation by ESR1. These results suggest that ESR1 functions as a transcription factor and that its transcriptional regulation is important for the initiation of shoot regeneration.
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subjects AP2/ERF protein
ESR1
shoot regeneration
transcription factor
title Analysis of functional domains and binding sequences of Arabidopsis transcription factor ESR1
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