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.
Genetic organization of the rpoA region in S. meliloti. Sites for restriction enzymes mentioned in Materials and Methods are indicated. ORFs, direction of transcription, and protein names are indicated. The stem-loop structure indicates a proposed transcriptional terminator.
