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Digitale Medien

A reexamination of the double-helix model for agarose gels using optical rotation (1995)

Schafer, Steven E. ; Stevens, Eugene S.

New York : Wiley-Blackwell

Biopolymers 36 (1995), S. 103-108

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Details

ISSN: 0006-3525

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: The diffuse x-ray diffraction patterns of agarose gels are compatible with both the “chicken-wire” gel model consisting of associated double-helix chain conformations and a network of more extended, but unentwined helices. Preference f or the double-helix model has largely rested on an early interpretation of optical rotation data. Applying a recent, less empirical, chiroptical model of saccharide rotation, we confirm the earlier analysis by concluding that the rotation observed in the gel can be satisfactorily accounted for in terms of wide-diameter agarose helices, capable of intertwining. In addition, we have found that the extended helices found in dried sols do not yield the observed gel rotations. © 1995 John Wiley & Sons, Inc.

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/bip.360360109

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