Table 1.

Strains used

StrainRelevant characteristicsSource or reference
PAKWild type; pili+ and flagella+ J. Mattick
PAK-N1Tn5G insertion in rpoN; pili and flagella 19
PAKpilT::Tn5 Tn5B21 insertion in pilT (mutant R364); hyperfimbriated, phage resistant 40
PAKpilU::Tn5 Tn5B21 insertion in pilU (mutant S34); hyperfimbriated, phage sensitive 40
PAKpilA::TcRTetracycline resistance cassette inserted into pilA; nonpiliated 38