Characterization of the sodium binding sites in microcrystalline ATP by 23Na-solid-state NMR and ab initio calculations

Martin Häubl, Martin Nausner, Norbert Müller, Wolfgang Schöfberger

Research output: Contribution to journalArticlepeer-review

Abstract

Stepwise conformational transition of disodium adenosine 50-triphosphate (Na2ATP) crystals as a function of relative humidity (r.H.), was examined by means of high resolution 23Na, 31P solid state NMR spectroscopy and quantum mechanics calculations. 23Na-MQMAS solid state NMR spectra of hydrated disodium salts of adenosine 5,50-triphosphate were measured to characterize the individual sodium sites. Quadrupolar coupling constants (CQ), and the asymmetry parameters of the electric field gradient tensors (eta) of sodium-23 determined by quantum mechanical calculations (GAUSSIAN03) using larger clusters than in previous studies were compared to the experimental 23Na-MQMAS spectra.
Original languageEnglish
Pages (from-to)1071-1077
Number of pages7
JournalInorganica Chimica Acta
Volume362
Issue number4
DOIs
Publication statusPublished - 02 Mar 2009

Fields of science

  • 104021 Structural chemistry
  • 105113 Crystallography
  • 103009 Solid state physics

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