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Biophysical Journal 58: 167-175 (1990)
© 1990 the Biophysical Society

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Theoretical nuclear magnetic resonance-lineshape study of a two-site chemical exchange model of sodium ions (I = 3/2) in an intracellular environment.

E Berggren and P O Westlund

Division of Physical Chemistry, Arrhenius Laboratory, University of Stockholm, Sweden.

ABSTRACT

We present a theoretical calculation of the lineshape function based on the solution of the semiclassical Liouville equation, of a two-site chemical exchange model of biological relevance. The bound site is allowed to be in the slow region regime that is the inverse quadrupole interaction of one bound site is in the same range as the reorientational correlation time. We compare different chemical exchange models, and several different physical situations are investigated. The variation of the width at half height (WHH) and the relative intensity (l/lo) is shown to be important, experimentally accessible quantities that are useful in order to discriminate between different model systems.






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Copyright © 1990 by the Biophysical Society.