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.
Uaa transcriptional switch. The transcription of the target gene open reading frame (ORF) requires the translation of a leader peptide beyond the inserted UAG. In the absence of the Uaa, translation of a leader peptide is interrupted, resulting in transcriptional termination at the unmasked rut site.
