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January 24, 2010 | History

Oxygen as a paramagnetic probe for nuclear magnetic resonance: Structure and paramagnetic profile of a lipid bilayer/membrane model system 1 edition

Oxygen as a paramagnetic probe for nuclear magnetic resonance: Struct ...
Mohamed Sameer Al-Abdul Wahid

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Oxygen as a paramagnetic probe for nuclear magnetic resonance: Structure and paramagnetic profile of a lipid bilayer/membrane model system.

Published 2005 .
Written in English.

About the Book

Paramagnetic contact shifts and relaxation rate enhancements from molecular oxygen dissolved in a model membrane, were studied by nuclear magnetic resonance spectroscopy. The model membrane system was an isotropic bicelle formed using 1-myristelaidoyl-2-myristoyl-d27-sn-glycero-3-phosphocholine (MLMPC), a custom phospholipid, and 1-2-dihexanoyl-d22- sn-glycero-3-phosphocholine (DHPC). The 13C and 1H spectra of MLMPC were assigned. Molecular oxygen was delivered at external pressures of 20 and 50 atm. Paramagnetic contact shifts were found to scale with the oxygen solubility gradient in the lipid bilayer, were found to be invariant to temperature changes in the region studied (288K to 331K), and scaled linearly with changes in oxygen pressure. Relaxation rate enhancements from oxygen were low in the headgroup region and increased to a roughly constant rate in the acyl chain region. Rates were comparable to values predicted by simple thermodynamic theories which take into account the observed gradients in diffusion rates and solubility of oxygen in bilayers.

Edition Notes

Source: Masters Abstracts International, Volume: 44-01, page: 0360.

Advisor: Scott Prosser

Thesis (M.Sc.)--University of Toronto, 2005.

Electronic version licensed for access by U. of T. users.

GERSTEIN MICROTEXT copy on microfiche (1 microfiche).

The Physical Object

Pagination
73 leaves.
Number of pages
73

ID Numbers

Open Library
OL19214609M
ISBN 10
0494021543

History Created December 11, 2009 · 2 revisions Download catalog record: RDF / JSON

January 24, 2010 Edited by WorkBot add more information to works
December 11, 2009 Created by WorkBot add works page