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Molecular conformation of polysaccharides in solution. Changes in the optical rotation and in the elution pattern of gel filtration

✍ Scribed by Shigehiro Hirano; Sumiyo Kondo-Ikeda

Publisher: Wiley (John Wiley & Sons)
Year: 1974
Tongue: English
Weight: 461 KB
Volume: 13
Category: Article
ISSN: 0006-3525
DOI: 10.1002/bip.1974.360130707

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✦ Synopsis

Abstract

Molecular conformation of some polysaccharides in aqueous solution in evidenced by changes in the optical rotation and in the elution pattern of gel filtration. The changes in the specific rotation against that in water are expressed as a molar conformational value [K]: −495° for colominic acid in 1.0 N NaOH solution, and −180° for hyaluronate (HA), +85° for corneal keratin sulfate, and +234° for amylose in 8 M urea solution. The gel filtration of amylose and HA dissolved in 8 M urea solution shows elution patterns distinctly different from those dissolved in water. The phenomena are attributable to a molecular conformational transition of polysaccharide molecules in aqueous solution.

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