Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Casein agar assay for SpeB proteolytic activity. MGAS5005, Δsrv and MGAS5005Δsrv(pIAβ8-srv) were stab inoculated into agar plates containing skim milk and incubated for 18 h microaerophilically. Protease activity is manifest as a zone of translucence surrounding the stab sites. There is a marked increase in the amount of SpeB proteolysis exhibited by Δsrv compared to MGAS5005 or MGAS5005Δsrv(pIAβ8-srv).
