Figure 3
The bR-linked regions of five haloarchaeal genomes (plus the hR region from N. pharaonis. The boxed arrows represent genes that are colour coded according to the following: bacteriorhodopsin (bR, green), bR gene activator (bat, blue), bR related protein (brp, teal), bR linked protein (brp, orange), bR associated chaperone (bac, red), bR associated protein, retinal synthesis genes (yellow), atp synthetase (atp, purple), cellular functions unrelated to BR function (grey) and their functionality is indicated in the text. The direction of transcription is indicated by the orientation of the arrow. The structure of the bacteriorhodopsin gene cluster is variable between haloarchaeal genera, but shares pronounced similarities between those lineages that group together in the RpoB' phylogeny.