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Regulatory mechanism of plant gene transcription by GT-elements and GT-factors
Zhou1
1Laboratoire de Génétique Moléculaire des Plantes, Université de Picardie Jules Verne, 33, rue Saint Leu, 80039 Amiens, France.
Abstract:
GT-elements are regulatory DNA sequences ususally found in tandem repeats in the promoter region of many different plant genes. Depending on promoter structure, GT-elements can have a positive or a negative transcription function. The cognate GT-element binding factors contain one or two trihelix DNA binding motifs, which have so far been identified in plant transcription factors only. GT-factors are ubiquitously expressed; in Arabidopsis they belong to a small family of transcription factors. The functioning of plant GT-elements and GT-factors shows complex regulatory features of plant gene transcription.
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