Infrared Spectrum of the Purple Membrane: Clue to a Proton Conduction Mechanism?
- 23 April 1982
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 216 (4544), 407-408
- https://doi.org/10.1126/science.6280277
Abstract
The infrared spectrum of the purple membrane of Halobacterium halobium has amide I and amide A frequencies that are anomalously high for standard alpha-helical structures. Normal mode calculations indicate that these and other unusual features of the spectrum can be attributed to alpha 11-helices. Such structures suggest that the helix backbone may provide the framework through which proton transport takes place.Keywords
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