Supplemental material

Files in this Data Supplement:

• Supplemental file 1 - Fig. S1, sites of transposon insertions mutations
  Zipped PDF document, 82K.
• Supplemental file 2 - Fig. S2, MS analysis of intact PilE in site-directed substitution mutants of PptA
  Zipped PDF document, 82K.
• Supplemental file 3 - Fig. S3, residues critical to PptA activity superimposed on modeled active-site structures
  Zipped PDF document, 112K.
• Supplemental file 4 - Legends to Fig. S1, S2, and S3; Table S1, primers
  MS Word document, 83K.