title: Investigation of the dynamical properties of water in elastin by deuterium Double Quantum Filtered NMR.
abstract: The anisotropic motion of tightly bound waters of hydration in bovine nuchal ligament elastin has been studied by deuterium Double Quantum Filtered (DQF) NMR. The experiments have allowed for a direct measurement of the degree of anisotropy within pores of elastin over a time scale ranging from 100 micros to 30 ms, corresponding to a tortuous spatial displacement ranging from 0.2 to 7 microm. We studied the anisotropic motion of deuterium nuclei in D2O hydrated elastin over a temperature of -15 degrees C to 37 degrees C and in solvents with varying dielectric constants. Our experimental measurements of the residual quadrupolar interaction as a function of temperature are correlated to the existing notion of hydrophobic collapse near 20 degrees C.
authors.affiliation: Brooklyn College, Department of Physics, 2900 Bedford Avenue Brooklyn, NY 11210, United States.
authors.forename: Cheng
authors.initials: C
authors.lastname: Sun
authors.forename: Gregory S
authors.initials: GS
authors.lastname: Boutis
mesh_terms: D000465:Algorithms; D000818:Animals; D016880:Anisotropy; D002417:Cattle; D003903:Deuterium / Q000737:chemistry*; D004549:Elastin / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D011789:Quantum Theory; D013696:Temperature; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water; D004549:Elastin; D003903:Deuterium
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