Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Schematic representation of RIVET analysis of B. pertussis iron transport system genes. Transcriptional activity of alcA (alcaligin), bfeA (enterobactin) and bhuR (heme) iron system promoters (designated PIron) in vivo drives production of the site-specific resolvase TnpR, which catalyzes excision of the linked kanamycin resistance marker (neo) by recombination between the res1 sites. Loss of kanamycin resistance serves as a stable heritable marker of prior gene expression.
