Bacteriorhodopsin: Molecular Biology of the Light Activated Proton and Divalent Cation Receptor in the Membranes of Halobacteria

  • L. Packer
Part of the NATO ASI Series book series (NSSA, volume 133)


The study of membrane receptors, their specificity and their relation to membrane transport and signalling ranks among the most important of the current unsolved problems in biological research. One membrane transport system that has received unprecedented attention during the last dozen years as a model system for such investigations has been bacteriorhodopsin, a retinal-containing protein which exists in specialized regions of the envelope membranes of halobacteria called “purple membrane.” Certain mutants of halobacteria also produce similar “white membranes” containing the apoprotein only. In both instances, there is evidence that the proteins are organized in a hexagonal arrangement in tightly packed arrays.1, 2


Bivalent Cation Proton Translocation Purple Membrane Carboxyl Residue Glycine Methyl Ester 
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Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • L. Packer
    • 1
  1. 1.Membrane Bioenergetics GroupUniversity of CaliforniaBerkeleyUSA

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