Files in this Data Supplement:

• Supplemental file 1 - Table S1, primer sequences
  MS Word document, 38K.
• Supplemental file 2 - Supplemental figure and movie legends
  MS Word document, 25K.
• Supplemental file 3 - Fig. S1, phylogenetic relationship of sigma factors from various species
  Zipped TIF document, 361K.
• Supplemental file 4 - Movie S1, time-lapse microscopy movie of strain AMC1449(pAM3648)
  QuickTime movie, 6.5MB.
• Supplemental file 5 - Movie S2, time-lapse microscopy movie of strain AMC1452(pAM3652)
  QuickTime movie, 5.9MB.
• Supplemental file 6 - Movie S3, time-lapse microscopy movie of strain AMC1457(pAM3657)
  QuickTime movie, 5.4MB.