FIG. 3.

Lysis of PBP mutants expressing FtsZ84. Cells were treated as described for Fig. 1, and their growth was monitored in a Bioscreen Reader at 30°C and after shift to 42°C. Mutants lacking PBP 4, PBP 7, or PBPs 4 and 5 did not lyse (data not shown). Instead, these mutants grew as well as the ftsZ84 parental strain.