Abstract:
:The aim of our study was to determine whether the structure of glucans formed by glucosyltransferase from Streptococcus sanguinis (GtfSs) on a surface differ from those formed in solution and to explore the effects of antiserum to Gtfs, control normal rabbit serum, starch hydrolysates (STH) and dextran on S. sanguinis (GtfSs) glucan. Linkage analyses showed that solution-formed glucans are predominantly alpha-1,6-linked and have a small amount of alpha-1,3-linked glucose. Surface-formed glucans have enhanced susceptibility to mutanase. Solution- and surface-formed glucans made in the presence or absence of sera, STH, and dextran contain linkages which differ in both amount and type from control glucans. The GtfSs enzyme in solution exposed to antiserum behaves as if it is adsorbed to a surface. Binding of Streptococcus mutans GS-5 and Actinomyces viscosus OMZ105E (Ny1) to S. sanguinis glucan differs if the glucan is formed in the presence of antiserum. The information could help to define the role of glucans in the formation of pellicle, colonization of tooth surfaces and the accumulation of dental plaque.
journal_name
Caries Resjournal_title
Caries researchauthors
Kopec LK,Vacca Smith AM,Wunder D,Ng-Evans L,Bowen WHdoi
10.1159/000047434subject
Has Abstractpub_date
2001-01-01 00:00:00pages
67-74issue
1eissn
0008-6568issn
1421-976Xpii
47434journal_volume
35pub_type
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