Table 1.

Bacterial strains and plasmids used in this study

Strain or plasmidGenotype or characteristic(s)Reference or sourcea
Plasmids
    pTRK563Emr; Δcat derivative of pGK12 with lacZ from pBluescript II KS(+)4
    pTRK685Emr; derivative of pORI28 with 777-bp internal fragment of gusA4
    pFliCPEmr; pTRK563 with insertion of PGM promoter and fliC from S. TyphimuriumThis study
L. gasseri strains
    ATCC 33323Human originT. Klaenhammer (collection stock of NC)
    ADHHuman intestinal isolate4
    NCK 1423Emr; ADH gusA::pTRK6854
    FliCPEmr; ATCC 33323 carrying pFliCPThis study
    NCK 1785Emr; ATCC 33323 carrying pTRK563T. Klaenhammer
  • a NC, culture collection at North Carolina State University, Raleigh, NC.