Abstract
Sodium dodecyl sulfate-polyacrylamide slab gel electrophoresis was used to compare soluble protein fractions from 36 strains of Rothia dentocariosa and related bacteria. The resulting protein patterns were examined to identify the bands of major and minor frequency within the genus. A cluster analysis revealed three major Rothia groups and a fourth group representing the genus Actinomyces. Our data demonstrated good correlations (>70%) with existing biotyping and serotyping schemes of these isolates. We suggest that electrophoretic group 2 represents a new Rothia species.
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