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.
(A) Mapping the hbaA start site by primer extension. Lane 1 contains the primer extension product (arrow) from RNA isolated from cells grown anaerobically on 4-HBA. A sequencing ladder generated with the same primer is shown. (B) Nucleotide sequence of the hbaA promoter region showing the start site of transcription (+1) and a putative −10 region that matches the E. coli ς70 consensus (TATAAT) at four of six positions.
