Description: English: Cells of Halobacterium, image taken by a high-powered microscope. The individual cells in this image are about 5 microns long (scale is only approximate). Date: 18 August 2008. Source: based on wikipedia commons Image:Halobacteria.jpg. Author: me, derivative work. Other versions: Image:Halobacteria.jpg.
Description: English: Cutaway view of bacteriorhodopsin from Halobacterium salinarum, with the retinol cofactor and residues involved in proton transfer (Arg82, Asp85, Asp96) shown as ball and stick models. Source: Created from data in PDB 1FBB. Author: Self-made.
This bacterium occurs in very large numbers and gives certain regions of water deriving from the spring a very bright red colour. The colour comes from the rhodopsin pigment. Phase contrast microscopy.
This image is of a small sample from a region of water that had a bright red colour. The rod shaped bacteria are the Halobacterium, but other species are present. The small refractile globules are sulphur droplets. Phase contrast microscopy.
