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.
λ-SWITCH system and the process of OL participation in the SWITCH. (a) SWITCH is composed of OR and OL promoter region and cI, cro genes. OR region consists of OR1, OR2, and OR3. PR completely overlaps OR1 and partially overlaps OR2, whereas PRM completely overlaps OR3 and partially overlaps OR2. (b and c) A schematic picture indicating the transition between unlooping configuration and looping configuration.
