Proteinases of Sfaphylococcus aureus are emerging as potential virulence fa
ctors which may be involved in the pathogenecity of staphylococcal diseases
. We describe here the structure of the gene encoding the metalloproteinase
referred to as aureolysin. This gene occurs in two allelic forms and is st
rongly conserved among S. aureus strains, implying the possibility that the
proteinase may have important housekeeping functions.