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Literature DB >> 2612287

Electron microscopy of liquid crystalline DNA: direct evidence for cholesteric-like organization of DNA in dinoflagellate chromosomes.

R L Rill¹, F Livolant, H C Aldrich, M W Davidson.

Abstract

Freeze-fracture-etch replicas of concentrated DNA solutions which appeared, by polarized light microscopy, to be in a cholesteric-like liquid crystalline state were examined by high resolution transmission electron microscopy (TEM). Individual DNA molecules were resolvable, and the microscopic morphologies observed for such replicas confirmed the cholesteric organization of DNA molecules in this liquid crystalline state. Furthermore, replica morphologies were strikingly similar to TEM images of dinoflagellate chromosomes in both thin section and freeze-etch replicas, providing strong support for the cholesteric DNA packing model proposed for the organization of DNA in these chromosomes by Bouligand and Livolant.

Mesh：

Substances：
DNA

Year: 1989 PMID： 2612287 DOI： 10.1007/bf00327314

Source DB: PubMed Journal: Chromosoma ISSN： 0009-5915 Impact factor: 4.316

13 in total

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Journal: Chromosoma Date: 1968 Impact factor: 4.316

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24 in total

1. Birefringence and DNA condensation of liquid crystalline chromosomes.

Authors: Man H Chow; Kosmo T H Yan; Michael J Bennett; Joseph T Y Wong
Journal: Eukaryot Cell Date: 2010-04-16

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Authors: Miloslava Fojtová; Joseph T Y Wong; Martina Dvorácková; Kosmo T H Yan; Eva Sýkorová; Jirí Fajkus
Journal: Chromosoma Date: 2010-04-06 Impact factor: 4.316

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Journal: Biophys J Date: 2005-07-22 Impact factor: 4.033

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Authors: Yuri M Yevdokimov; Sergey G Skuridin; Sergey V Semenov; Ljubov A Dadinova; Viktor I Salyanov; Efim I Kats
Journal: J Biol Phys Date: 2016-12-27 Impact factor: 1.365

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Authors: Carmen K M Mak; Victor K L Hung; Joseph T Y Wong
Journal: Chromosoma Date: 2005-11-15 Impact factor: 4.316

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10. Polarization-sensitive two-photon microscopy study of the organization of liquid-crystalline DNA.

Authors: Halina Mojzisova; Joanna Olesiak; Marcin Zielinski; Katarzyna Matczyszyn; Dominique Chauvat; Joseph Zyss
Journal: Biophys J Date: 2009-10-21 Impact factor: 4.033