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.
Fis represses bgl operon expression when it is activated by IS insertion. (A) Fis repression of bgl operon expression after activation by IS insertion. (B) Antagonism between Fis and Crp in regulating the bgl operon. In both (A) and (B), IS5 insertion is present both in the native operon and the operon lacZ reporter. Cells were cultured in M63 with glycerol and salicin as carbon sources. Sample collection and β-galactosidase assays were carried out as in Figure 1.
