Generation and Characterization of a Defined Mutant of <i>Streptococcus suis</i> Lacking Suilysin

Andrew G. Allen, Steven Bolitho, Heather Lindsay, Shahid A. Khan, Clare Bryant, P. Norton, Philip N. Ward, James A. Leigh, Jeremy Morgan, Helen Riches,

Infection and Immunity · 2001 · 74 citations · 14 references

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Abstract

A defined allelic-replacement mutant of the sly gene, encoding a thiol-activated cytolysin, from a European isolate of Streptococcus suis serotype 2 was generated and characterized. Unlike the parental strain, it is nonhemolytic, noncytotoxic for cultured macrophage-like cells, avirulent in a mouse infection model, yet only slightly attenuated in a porcine model of systemic infection.

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14