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| HAL : hal-00338927, version 1 |
| DOI : 10.1103/PhysRevE.75.030901 |
| Fiche détaillée |  Récupérer au format |
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| Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 75 (2007) 030901(R) |
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| Screwlike Order, Macroscopic Chirality, and Elastic Distortions in High-density DNA Mesophases |
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| Federico Manna1Vladimir Lorman1R. PodgornikB. Zeks |
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| (15/06/2007) |
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| We investigate a new screwlike liquid-crystalline ordering in solutions of helical biopolymers and its influence on the state of individual molecules. In the resulting mesophase translational and rotational motions of molecules are coupled in screw fluctuations. We show that in contrast to the case of conventional chiral liquid crystals the elastic distortion does not twist the screw order but leads to overwinding of individual helical molecules. This explains the peculiarities of high-density DNA mesophases. |
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| 1 : | LPTA - Laboratoire de Physique Théorique et Astroparticules |
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| Domaine | : | Sciences du Vivant/Biochimie, Biologie Moléculaire/Biophysique |
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| DNA – molecular biophysics – biochemistry – chirality – liquid crystals – fluctuations – translational states – rotational states – elasticity PACS: 87.14.Gg – 61.25.Hq – 64.70.Md – 87.15.Nn |
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| hal-00338927, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00338927 | |
| oai:hal.archives-ouvertes.fr:hal-00338927 | |
| Contributeur : Logiciel Aigle | |
| Déposé pour le compte de : | |
| Soumis le : Vendredi 14 Novembre 2008, 16:52:28 | |
| Dernière modification le : Vendredi 14 Novembre 2008, 16:52:28 | |
