Chromatin structure and phaseolin gene regulation

Chromatin structure and phaseolin gene regulation Chromatin structure, the organized packaging of DNA with histones in the nucleus, is now seen as a dynamic fabric that changes with development. Here, we use studies on the phaseolin (phas) gene that encodes a seed protein to show how chromatin structure interacts with the transcription machinery to accomplish rigorous spatial regulation of expression. In leaf and other vegetative tissues, a nucleosome is rotationally and translationally positioned over an ensemble of three phased TATA boxes, denying access to TBP. Current interest focuses on the mechanisms by which this architecture is remodeled during embryogenesis. The transcription factor PvALF is intrinsically involved, as are other non-histone proteins and abscisic acid. These concepts, and the possible modular nature of phas expression, are summarized together with speculations concerning the re-establishment of the nucleosome over the phas promoter during terminal stages of embryogenesis. Plant Molecular Biology Springer Journals

Chromatin structure and phaseolin gene regulation

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Kluwer Academic Publishers
Copyright © 2001 by Kluwer Academic Publishers
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
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