Protein (ω:YFP)₂ binds <i>P</i>_δ and represses transcription.

aThe plasmid or the strain bearing the relevant promoter(s) and gene(s) are indicated between parentheses. bThe molecules/CFU were estimated as described in Materials and methods. The estimated numbers of molecules/cell are denoted between parentheses. cThe Phsp δ:gfp, Phsp δD60A:gfp and Phsp ω:yfp genes integrated as unique copies into the amy locus in B. subtilis are under the control of the LacI expression cassette (LacI repressor-Hyper-Spank promoter, Phsp) (see S1 Table). The BG947, BG1097 and BG1469 strains were grown in the presence of 10 μM IPTG. NA, not applicable. Protein (ω:YFP)2 binds Pδ and represses transcription.