| DOI | Trouver le DOI : https://doi.org/10.1039/c1sm05691c |
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| Auteur | Rechercher : Armstrong, C.L.; Rechercher : Trapp, M.; Rechercher : Peters, J.; Rechercher : Seydel, T.; Rechercher : Rheinstädter, M.C.1 |
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| Affiliation | - Conseil national de recherches du Canada. Centre canadien de faisceaux de neutrons du CNRC
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| Format | Texte, Article |
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| Sujet | Ballistic motions; Experimental evidence; Fluid lipid bilayers; Lateral directions; Length scale; Lipid molecules; Molecular motions; Quasi elastic neutron scattering; Ballistics; Cytology; Diffusion; Neutron scattering |
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| Résumé | Diffusion is the primary mechanism for movement of lipids and proteins in the lateral direction of a biological membrane. In this paper we have used quasi-elastic neutron scattering to examine the diffusion process of lipid molecules in fluid DMPC membranes. We found that the motion over length scales greater than the lipid diameter could be characterized as a continuous diffusion process, with a diffusion coefficient of D = 64 × 10 -12 m 2/s. The continuous diffusion model has been successfully used in the past to describe the motion of lipid over long length scales. However, the focus of this measurement was to determine how the character of the molecular motion changes on length scales shorter than the nearest neighbour distance. At very short length scales (<2.37 Å), we see first experimental evidence for a short-range flow-like ballistic motion. © 2011 The Royal Society of Chemistry. |
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| Date de publication | 2011 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21272022 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 6c6e4bad-ed7d-45eb-ab54-5da43944634f |
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| Enregistrement créé | 2014-05-21 |
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| Enregistrement modifié | 2020-04-21 |
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