title: Three-dimensional structure of orthorhombic purple membrane at 6.5 A resolution.
mesh_terms: D001436:Bacteriorhodopsins; D002338:Carotenoids; D003460:Crystallization; D008433:Mathematics; D008854:Microscopy, Electron; D008958:Models, Molecular
chemical_list: D002338:Carotenoids; D001436:Bacteriorhodopsins