Abstract
In the present technical note for 31P-NMR, we used a new pH-dependent dissociation constant of MgATP, and re-estimated changes in the intracellular free Mg2+ concentration and pH from the chemical shifts of beta- and gamma-ATP during Na+-removal in smooth muscle. We confirmed the role of Na+ - Mg2+ exchange.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adenosine Triphosphate / metabolism*
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Animals
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Cecum / metabolism*
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Guinea Pigs
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Hydrogen / metabolism*
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Hydrogen-Ion Concentration
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Intracellular Membranes / metabolism*
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Magnesium / metabolism*
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Models, Biological*
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Sodium / pharmacology
Substances
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Hydrogen
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Adenosine Triphosphate
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Sodium
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Magnesium