Files in this Data Supplement:

• Supplemental file 1 - Gene identifiers, alignments, phylogenies, differentially expressed genes, BLAST results; Fig. S1, predicted transmembrane topology of a protein encoded in close proximity to the agr locus in many clostridia; Fig. S2, interactions surrounding the agr system in S. aureus; Fig. S3, comparison of gene expression in wild-type strains and strains with a nonfunctional agr-like locus
  Zip document, 284K.