Glucan-binding proteins of Streptococcus mutans serotype c.

Three glucan-binding proteins have been isolated from the extracellular fluid cultures of Streptococcus mutans serotype c. These proteins were adsorbed to glucans containing 1,3-alpha or 1,6-alpha bonds and linked to various chromatographic supports: they were eluted from columns by a dextran solution. Glucosyltransferase activity was associated with two of the glucan-binding proteins.