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. 2008 Jun 9;76(8):3550–3560. doi: 10.1128/IAI.01613-07

FIG. 1.

FIG. 1.

Schematic representation of GBS PIs. Genes encoding the three LPXTG proteins that comprise the pilus structure are represented by black (backbone subunit) and white (ancillary subunits) arrows. Subfamily SrtC transpeptidases that polymerize the protein subunits are shown in gray. Gene designations correspond to GBS strain 2603V/R, accession number AE009948 (PI-1 and PI-2a) or strain COH1, accession number AAJR00000000 (PI-2b).