BIOCHEMICAL-PROPERTIES AND WHOLE-CELL PROTEIN PROFILES OF GROUP-G STREPTOCOCCI ISOLATED FROM DOGS

Whole-cell protein profiles obtained by SDS-PAGE were used in conjucti on with physiological tests to differentiate strains of Streptococcus canis isolated from dogs. Fermentation of trehalose and lactose, aescu lin hydrolysis together with production of beta-D-glucuronidase and al pha-D-galactosidase allowed the demonstration of nine different biotyp es. However, visual analysis of the protein patterns and comparison by the coefficient of Dice showed minor differences in band patterns amo ng strains. Only two different profiles were observed. Although a corr elation between biotyping and protein profile has been found, this kin d of analysis did not provide the basis for a typing method.