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  • Title: Photoreaction of N560 intermediate in the photocycle of bacteriorhodopsin.
    Author: Yamamoto N, Naramoto S, Ohtani H.
    Journal: FEBS Lett; 1992 Dec 21; 314(3):345-7. PubMed ID: 1468566.
    Abstract:
    Sophisticated measurements were made on the nanosecond time-resolved absorbance change of the purple membrane of Halobacterium halobium under cw background light irradiation (440-800 nm, 11-441 mW/cm2). A red-shifted transient species R660 (KN, Q) was found in alkaline conditions (pH > 9.3). Background light intensity effect shows that (i) R660 is photochemically formed from N560 intermediate which is accumulated under background light irradiation because of the elongated lifetime in alkaline suspension, and that (ii) the slow decaying M412 is not photochemically formed from N560 but from bR568.
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