Fig. 1.
Schematic illustration of the frl operon with the frlB and frlO intergenic region. The 38-bp perfect palindromic sequence is shown in bold letters. A putative FrlR binding site (underlined) is located in the center of the intergenic region.
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.