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.
DNA sequence of the ampC promoter and attenuator regions from selected E. coli isolates compared with analogous sequences of K12 and DH5α (4, 5). The −35 and −10 consensus promoter sequences and the translation initiation codon for AmpC β-lactamase are underlined. Arrows indicate the transcription attenuator region. The amino acid sequence of the initial segment of the AmpC leader region is shown below the corresponding nucleotide sequence.
