title: Two photocycles in halobacterium halobium that lacks bacteriorhodopsin.
mesh_terms: D001436:Bacteriorhodopsins / Q000172:deficiency*; D002338:Carotenoids / Q000172:deficiency*; D003593:Cytoplasm / Q000502:physiology; D006217:Halobacterium / Q000235:genetics / Q000502:physiology*; D007425:Intracellular Membranes / Q000502:physiology; D009154:Mutation; D010777:Photochemistry; D012965:Sodium Chloride / Q000494:pharmacology; D013053:Spectrophotometry
chemical_list: D002338:Carotenoids; D012965:Sodium Chloride; D001436:Bacteriorhodopsins