SEARCH Articles Figures Tables Bacteriorhodopsins Halobacterium salinarum Halobacterium bacterioruberin from Halobacterium cutirubrum Halobacterium halobium Halobacterium halobium activity Halobacterium halobium bacteriorhodopsin Halobacterium halobium bacteriorhodopsin from Halobacterium halobium mutations Halobacterium halobium photosynthesis Halobacterium halobium purple membrane Halobacterium halobium, membrane Halobacterium marismortui Halobacterium salinarium Halobacterium salinarium glycoprotein Halobacterium salinarum Halobacterium salinarum strain Halobacterium spp Halobacterium spp cation concentration gradients Prokaryotic phototaxis Halobacterium salinarum Purple membrane of Halobacterium halobium Purple membrane, of Halobacterium Purple membrane, of Halobacterium halobiu