Gel mobility retardation of tox promoters with C.
difficile RNA polymerase and TxeR; gel mobility retardation of
the C. difficile glutamate dehydrogenase gene promoter
(Pgdh), toxin B gene promoter (PtoxB),
and toxin A gene promoter (PtoxA) by C.
difficile RNA polymerase. For gdh promoter, left
lane is Pgdh DNA alone and right lane is
Pgdh DNA incubated with C. difficile RNA
polymerase. For toxB and toxA promoters,
left lane is tox promoter DNA alone, middle lane is
tox promoter DNA with C. difficile RNA
polymerase, and right lane is tox promoter DNA with
C. difficile RNA polymerase and TxeR, respectively.