Fig. 6. Dual labelling of RNAP and ribosomes indicates that they occupy separate subcellular domains. (A–C) Images of a pair of cells from strain 1056 grown in CH medium. (A) RpoC–GFPuv distribution, false coloured red. The arrows indicate the positions of TFs. (B) RpsB–GFP distribution. (C) Image overlays. (D) Fluorescence intensity profile along a line through the image overlay, with Rpo–GFPuv (red) and RpsB–GFP (green) signals. Peaks in the RpoC–GFPuv signal are indicated with arrows. Scale bar, 2.5 μm.