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.
Binding of downstream and upstream fork junction probes to wild-type and to β′Δ(1149–1190) RNAP beacons. Titration of (211Cys-TMR) σ70 holoenzymes containing the wt or mutant β′Δ(1149–1190) subunit with a downstream (A) or upstream (B) fork junction probes is shown. The solid lines correspond to a nonlinear regression fit of the data.
