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 overview of the Pyp regulatory network. PypA, PypB, and PypC activate the transcription of hreP. Furthermore, the transcription of pypB and pypC is autoregulated, and the transcription of each is regulated by the protein encoded by the other. Dotted lines with arrows indicate positive regulation, while a solid line indicates H-NS silencing of hreP transcription. Arrowheads indicate promoter regions upstream of hreP, pypB, and pypC.
