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  • Title: Two pumps, one principle: light-driven ion transport in halobacteria.
    Author: Oesterhelt D, Tittor J.
    Journal: Trends Biochem Sci; 1989 Feb; 14(2):57-61. PubMed ID: 2468194.
    Abstract:
    Comparison of the primary structure of the chloride pump halorhodopsin with that of the proton pump bacteriorhodopsin provides insight into light-driven ion transport by retinal proteins. Several conserved amino acid residues in the membrane-spanning region of both proteins and their interaction with different isomerization states of retinal are suggested to be the key element for ion transport in both proteins.
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