FIG. 1.

Nucleotide sequence of tet(L) leader region RNA. The sequence shown is from the major transcriptional start site (+1) to the start codon for the Tet(L) coding sequence. The minor transcriptional start site is indicated. Ribosome-binding sites RBS1 and RBS2 are shown, and the leader peptide codons are numbered 1 to 20. Mutations in the leader region are indicated alongside the name of the plasmid carrying each mutation. The Δ for pYW106 indicates a deletion of codons 13 to 15. The RNA structure shown is the putative structure that forms in the presence of Tc.