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Absorption changes accompanying hydrolysis of the retinal Schiff base with hydroxylamine, 0.2 M, pH 7.2. A. Spectra of: 1, gloeobacter rhodopsin reconstituted with echinenone immediately after addition of 0.2 M hydroxylamine, 2 through 6, 10, 30, 60, 120, 360 min later; B. Difference “spectrum i minus spectrum 1”.
