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  • Title: The bleaching of the bacteriorhodopsin chromophore by ionizing radiation.
    Author: Sherman WV, Slifkin MA, Kushelevsky AP, Parker SA.
    Journal: Int J Radiat Biol Relat Stud Phys Chem Med; 1979 Jul; 36(1):11-7. PubMed ID: 315378.
    Abstract:
    The visible chromophore of bacteriorhodopsin, BR(570), undergoes progressive bleaching when subjected to 60CO gamma-irradiation. The low G-value for bleaching confirms that the site of the chromophore is highly protected. Positive and negative circular dichroic (CD) bands associated with the chromosphone undergo concomitant decrease in a manner which is consistent with two independent chromophores rather than exciton coupling between neighbouring chromophoric site.
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