CRYSTALLINE FEATURES OF STREPTOCOCCAL (1-]3)-ALPHA-D-GLUCANS OF HUMAN SALIVA

被引：13
|
作者：
OGAWA, K
YUI, T
OKAMURA, K
MISAKI, A
机构：
[1] MIYAZAKI UNIV, DEPT MAT SCI, MIYAZAKI 88921, JAPAN
[2] KYOTO UNIV, FAC AGR, DEPT WOOD SCI & TECHNOL, KYOTO 60601, JAPAN
[3] OSAKA CITY UNIV, FAC SCI LIVING, SUMIYOSHI KU, OSAKA 558, JAPAN
来源：
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY | 1994年 / 58卷 / 07期
关键词：
D O I：
10.1271/bbb.58.1326
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Crystalline polymorphs of the backbone (1-->3)-alpha-D-glucans of two streptococcal alpha-glucans were studied by X-ray diffraction measurements in comparison with that of a fungal (1-->3)-alpha-D-glucan. The glucan produced by S. salivarius changed its polymorph from the hydrated form at 100% relative humidity to the dehydrated form under vacuum, that produced by cariogenic S. mutans took the dehydrated form only, and the fungal glucan always showed the hydrated form. The difference of polymorphic behavior was ascribed to the molecular weight of the glucan since the fungal glucan showed the highest viscosity, the saliverius glucan, middle, and the mutans glucan, the lowest.
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页码：1326 / 1327
页数：2
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