Kinetics of denaturation and renaturation processes of double-stranded helical polysaccharide, xanthan in aqueous sodium chloride

Circular dichroism (CD) and small-angle X-ray scattering (SAXS) measurements were made for three xanthan samples, a double helical polysaccharide, in 5 or 10 mM aqueous NaCl after rapid temperature change to investigate the kinetics of the conformational change between the ordered and disordered sta...

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Veröffentlicht in:	Carbohydrate polymers 2022-01, Vol.275, p.118681-118681, Article 118681
Hauptverfasser:	Tomofuji, Yu, Matsuo, Koichi, Terao, Ken
Format:	Artikel
Sprache:	eng
Schlagworte:	Carbohydrate Conformation Circular dichroism Circular Dichroism - methods Conformational change Double helix Intermediate state Kinetics Molecular Conformation Polysaccharides, Bacterial - chemistry Scattering, Small Angle Small-angle X-ray scattering Sodium Chloride - chemistry Temperature Water - chemistry X-Ray Diffraction - methods
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Zusammenfassung:	Circular dichroism (CD) and small-angle X-ray scattering (SAXS) measurements were made for three xanthan samples, a double helical polysaccharide, in 5 or 10 mM aqueous NaCl after rapid temperature change to investigate the kinetics of the conformational change between the ordered and disordered states. After the rapid heating, the CD signal mainly reflecting the carbonyl groups on the side chains quickly changed (
ISSN:	0144-8617 1879-1344
DOI:	10.1016/j.carbpol.2021.118681