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Ordered phases of DNA in vivo and in vitro

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  • Livolant, Françoise

Abstract

In vitro, pure DNA forms multiple liquid crystalline phases when the polymer concentration is increased: precholesteric organization, cholesteric phase and columnar hexagonal phase. Similar organizations of chromatin can be found in vivo: hexagonal packing in bacteriophages and certain sperm heads, cholesteric organization in dinoflagellate chromosomes, bacterial nucleoids and mitochondrial DNA, helical-shaped chromosomes in many species. The different forms of condensed chromatin seem to be related to different local concentrations of DNA. In the highly condensed forms, chromatin is inactive and the double stranded DNA molecule is linear with small amounts of associated proteins.

Suggested Citation

  • Livolant, Françoise, 1991. "Ordered phases of DNA in vivo and in vitro," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 176(1), pages 117-137.
    • Handle: RePEc:eee:phsmap:v:176:y:1991:i:1:p:117-137
    DOI: 10.1016/0378-4371(91)90436-G
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    1. Flemming Larsen & John Llewellyn, 1983. "Simulation des effets macro-économiques d'une forte baisse des prix pétroliers," OECD Economics Department Working Papers 8, OECD Publishing.
    2. Araten, Michel & Dickman, Bernard, 1976. "Linear programming and financial cost models for industrial enterprises," Omega, Elsevier, vol. 4(3), pages 279-288.
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    1. Guillermo A. Orsi & Maxime M. C. Tortora & Béatrice Horard & Dominique Baas & Jean-Philippe Kleman & Jonas Bucevičius & Gražvydas Lukinavičius & Daniel Jost & Benjamin Loppin, 2023. "Biophysical ordering transitions underlie genome 3D re-organization during cricket spermiogenesis," Nature Communications, Nature, vol. 14(1), pages 1-16, December.

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