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.
Positive control mutants isolated in this study (in the TraR NTD) and in a previous study (TraR-CTD) (White and Winans, 2005). Residues in white affect both PtraI and PtraM, while residues in black affected only PtraI. (A) View of TraR along the DNA axis, showing the concave and convex faces of the crystal structure. (B and C) TraR rotated to show the concave surface and convex surfaces, respectively.
