Acrylamide gel electrophoretic methods were used to assess the numbers and types of sucrose-metabolizing enzymes elaborated by Streptococcus mutans strains HS-6, SL-1, FA-1, and NCTC 10449. Two types of polysaccharide-synthesizing enzymes and one invertaselike enzyme were distinguished. The patterns of extracellular proteins and enzymes were distinctive for each strain.
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