Properties of extracellular neuraminidase produced by group A streptococcus.

@article{Davis1979PropertiesOE,
  title={Properties of extracellular neuraminidase produced by group A streptococcus.},
  author={Lydia Davis and Mirza Mansoor Baig and Ella M. Ayoub},
  journal={Infection and immunity},
  year={1979},
  volume={24 3},
  pages={
          780-6
        }
}
Extracellular neuraminidase production by group A streptococci was examined in 92 strains. Fourteen of these strains produced appreciable amounts of enzyme; 12 of the neuraminidase-producing strains belonged to T types 1, 4, and 12. Production of the enzyme paralleled bacterial growth in culture and was maximal in medium containing 0.2% glucose. The enzyme produced by one of these strains was partially purified by ammonium sulfate fractionation and filtration on G-200 Sephadex. Its molecular… CONTINUE READING

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Virulence factors of the group A streptococci and genes that regulate their expression.

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