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. 1988 Sep;54(3):527-33.
doi: 10.1016/S0006-3495(88)82985-0.

TI-205 nuclear magnetic resonance determination of the thermodynamic parameters for the binding of monovalent cations to gramicidins A and C

J F Hinton  1 , J Q Fernandez, D C Shungu, W L Whaley, R E Koeppe 2nd, F S Millett
Affiliations

TI-205 nuclear magnetic resonance determination of the thermodynamic parameters for the binding of monovalent cations to gramicidins A and C

J F Hinton et al. Biophys J. 1988 Sep.

Abstract

Thermodynamic parameters for the binding of the monovalent cations, Li+, Na+, K+, Rb+, Cs+, NH4+, TI+, and Ag+, to gramicidin A and for the binding of TI+ to gramicidin C, incorporated into lysophosphatidylcholine, have been determined using a combination of TI-205 nuclear magnetic resonance spectroscopy and competition binding. The thermodynamic parameters, enthalpy and entropy, are discussed in terms of a process involving the transfer of cations from an aqueous to amide environment.

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