Skip to main content
. 1998 Sep;180(18):4893–4902. doi: 10.1128/jb.180.18.4893-4902.1998

FIG. 3.

FIG. 3

Northern blot analysis of gal-lac operon expression from L. lactis NCDO2054 grown on medium containing glucose (lane 1), lactose (lane 2), or galactose (lane 3) and hybridized with probes specific for galK (A), galT (B), lacZ (C), and galE (D). The positions of the 23S (2.9-kb) and 16S (1.5-kb) rRNAs and the estimated sizes of the gal-lac-specific transcripts are indicated. (E) Illustration of the transcriptional units of the gal-lac operon of L. lactis NCDO2054. The positions of potential promoters (black arrows) and the transcriptional terminator ( Created by potrace 1.16, written by Peter Selinger 2001-2019 ) are indicated. The transcripts are represented as lines with arrows, and their estimated lengths (in kilobases) are indicated at the right. Lines labeled probe 1, probe 2, probe 3, and probe 4 show the extents of the DNA probes used in Northern analysis of the mRNA of the operon.