Gene regulation in planta by plant-derived engineered zinc finger protein transcription factors

Gene regulation in planta by plant-derived engineered zinc finger protein transcription factors The ability to modify plant traits is of great commercial potential in agricultural biotechnology. To this end we have engineered plant-based zinc finger protein transcription factors (ZFP TFs) that minimize the use of non-plant DNA sequences. This novel architecture supports the use of tandem arrays of zinc-finger DNA recognition domains such that the ZFP TF binds a contiguous DNA target site – thus emulating the design of ZFP TFs described previously for mammalian gene regulation. We show that this plant-based ZFP TF architecture supports high affinity DNA binding while allowing the specificity of the DNA-protein interaction to be determined by the amino acid sequences of the recognition helices. This plant-based backbone thus supports the use of previously characterized DNA recognition helices originally identified in a mammalian ZFP context without using mammalian DNA sequences. Moreover, we show that plant-based ZFP TFs employing this new architecture can up-regulate endogenous ADH activity by > 20-fold in transgenic Arabidopsis. Thus plant-based ZFP TFs are shown to be potent regulators of gene expression in vivo. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Gene regulation in planta by plant-derived engineered zinc finger protein transcription factors

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2005 by Springer
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1007/s11103-004-7820-x
Publisher site
See Article on Publisher Site

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