Strep. Mutans

Thus, in the 1940s and 50s, the primer mechanism was assumed for the synthesis of dextran.52 5369,70 This mechanism was strengthened in the 1970s when Germaine et a/.71-73 found that the addition of dextran to digests of Strep, mutans dextransu-crase increased the rate of dextran synthesis. They found that the rate reached a maximum when the average size of the added dextran was 30 glucose residues.7172... 

Fig. 5.—Two-site insertion mechanism for the synthesis of Strep, mutans mutan by mutansucrase. The symbols are the same as in Fig. 3 with the substitution of Y for X as the nucleophiles represents a glucose residue linked a-(l—>3)to another glucose residue. Y orients the glucosyl units so that their 3-hydroxyl groups can attack at C-l of the apposed glucosyl unit.

The products are those produced by Leuc. mesenteroides B-512F dextransucrase unless otherwise indicated. b The starred products are also acceptors that give a homologous series with a-isomalto-oligosaccharides attached to the acceptor.r Structure not determined.d Two products are formed by Leuc. mesenteroides B-512F dextransucrase. Not an acceptor. Four products are formed by Strep, mutans GTF-I. Product formed by altemansucrase. 

Loimaranta, V., Carlen, A., Olsson, J., Tenovuo, J., Syvaoja, E., and Korhonen, H. 1998a. Concentrated bovine colostral whey proteins from Streptococcus mutans/Strep. sobrinus immunised cows inhibit the adherence of Strep, mutans and promote the aggregation of mutans streptococci. J. Dairy Res. 65, 599-607. 

Anti-adhesive effect. Green and roasted coffee, used in a treatment mixture and as a pretreatment on beads, inhibited the Strep tococcus mutans sucrose-independent adsorption to saliva-coated hydroxyapatite beads. The inhibition of Salmonelb mutans adsorption indicated that coffee-active molecules may adsorb to a host surface, preventing the tooth receptor from interacting with any bacterial adhesions. Among the known tested coffee components, trigonelline and nicotinic and chlorogenic acids are very... 

Plaque formation suppressant. Water extract of the rhizome was inactive on Streps tococcus mutans. The methanol and metha-nol/water extracts were active ICjo were greater than 1000, 60, and 230 pg/mL, respectively . ... 

Loimaranta, V., Nuutila, J., Marnila, P., Tenovuo, J., Korhonen, H., and Lilius, E. 1999a. Colostral proteins from cows immunised with Streptococcus mutans/Strep. sobrinus support the phagocytosis and killing of mutans streptococci by human leukocytes. J. Med. Microbiol. 48, 1-10. 

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