An official website of the United States government
Here's how you know
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.
Open and paused complexes of late promoters of phages λ and 82. Structures were described (39); the 82 sequence is the variant described. Circles and ovals represent, respectively, the assigned positions of σ70 regions 2 and 4. Paused complexes are shown in the forward position (38).