The determination of the separate Ca2+ pump protein and phospholipid profile structures within reconstituted sarcoplasmic reticulum membranes via X-ray and neutron diffraction |
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Authors: | L. Herbette A. Scarpa J.K. Blasie C.T. Wang L. Hymel J. Seelig S. Fleischer |
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Affiliation: | 1. Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104 U.S.A.;2. Departments of Biochemistry/Biophysics, University of Pennsylvania, Philadelphia, PA 19104 U.S.A.;3. Department of Biology, Brookhaven National Laboratory, Upton, NY 11973 U.S.A.;4. Department of Molecular Biology, Vanderbilt University Nashville, TN 37235 U.S.A.;5. Department of Biozentrum, Basel Switzerland |
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Abstract: | We have previously compared the electron density profiles for several highly-functional reconstituted sarcoplasmic reticulum membranes with that for the isolated sarcoplasmic reticulum membrane (Herbette, L., Scarpa, A., Blasie, J.K., Wang, C.T., Saito, A. and Fleischer, S. (1981) Biophys. J. 36, 47–72). In this paper, we compare the separate calcium pump protein profile within these reconstituted sarcoplasmic reticulum membranes, as derived by X-ray and neutron diffraction methods, with that within isolated sarcoplasmic reticulum membranes. In addition, the time-average perturbation of the lipid bilayer by the incorporated calcium pump protein within these reconstituted sarcoplasmic reticulum membranes has been determined in some detail. |
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Keywords: | Phospholipid structure X-ray diffraction Neutron diffraction (Sarcoplasmic reticulum membrane) DOPC dioleylphosphatidylcholine |
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