title: Interpretations of the effects of pH on the spectra of purple membrane.
mesh_terms: D001436:Bacteriorhodopsins; D002338:Carotenoids; D002942:Circular Dichroism; D006863:Hydrogen-Ion Concentration; D008565:Membrane Proteins; D011487:Protein Conformation; D013053:Spectrophotometry
chemical_list: D008565:Membrane Proteins; D002338:Carotenoids; D001436:Bacteriorhodopsins