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    Motional Coherence in Fluid Phospholipid Membranes

    Rheinstädter, Maikel C.
    Das, Jhuma
    Flenner, Elijah J.
    Brüning, Beate
    Seydel, Tilo
    Kosztin, Ioan
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    [PDF] MotionalCoherenceFluidPhospholipid.pdf (278.9Kb)
    Date
    2008
    Format
    Article
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    Abstract
    We report a high energy-resolution neutron backscattering study, combined with in situ diffraction, to investigate slow molecular motions on nanosecond time scales in the fluid phase of phospholipid bilayers of 1,2-dimyristoyl-sn-glycero-3-phoshatidylcholine. A cooperative structural relaxation process was observed. From the in-plane scattering vector dependence of the relaxation rates in hydrogenated and deuterated samples, combined with results from a 0.1  μs long all-atom molecular dynamics simulation, it is concluded that correlated dynamics in lipid membranes occurs over several lipid distances, spanning a time interval from pico- to nanoseconds.
    URI
    http://hdl.handle.net/10355/8212
    Citation
    Phys. Rev. Lett. 101, 248106 (2008)
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