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Rapid Lateral Diffusion of Phospholipids in Rabbit Sarcoplasmic Reticulum

Carl J. Scandella, Philippe Devaux and Harden M. McConnell
Proceedings of the National Academy of Sciences of the United States of America
Vol. 69, No. 8 (Aug., 1972), pp. 2056-2060
Stable URL: http://www.jstor.org/stable/61472
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Rapid Lateral Diffusion of Phospholipids in Rabbit Sarcoplasmic Reticulum
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Abstract

Phospholipid spin labels incorporated in the sarcoplasmic reticulum from rabbit-skeletal muscle undergo rapid lateral diffusion within the plane of the membrane. The diffusion constant, D, is 6 × 10-8 cm2/sec at 37 degrees. With this diffusion constant, a phospholipid molecule can diffuse a distance of the order of 5000 nm in 1 sec.

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