Table 1.

Titration of clumping factor and coagulase of WCUH29 and its ΔsigB::Tc mutant

ActivityTitera
WCUH29ΔsigB
Exponential phaseStationary phaseExponential phaseStationary phase
Clumping factor2,0482,048<1<1
Coagulase>32,768>32,768512<1
  • a Fibrinogen-dependent cell clumping activity and coagulase activity were determined as described previously (17). All experiments were performed in triplicate.