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Speciation in Aqueous Vanadate – Ligand and Peroxovanadate – Ligand systems
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
2009 (English)In: Journal of Inorganic Biochemistry, ISSN 0162-0134, E-ISSN 1873-3344, Vol. 103, no 4, 517-526 p.Article in journal (Refereed) Published
Abstract [en]

In the present focused review, the speciation studies of aqueous vanadate-ligand (L) and peroxovanadate-L systems are addressed. The paper focuses solely on the systems studied at our department in the context of potential insulin-enhancing effects, including the following ligands: imidazole, alanylhistidine, alanylserine, lactate, picolinate, citrate, phosphate, maltol, and uridine. We summarise the results of detailed and thorough potentiometric (glass electrode) and 51V NMR (Bruker AMX-500 MHz) spectroscopic studies, performed at 25 °C in 0.150 M Na(Cl), a medium representing human blood. The importance of experimental conditions is discussed and illustrated. A detailed overview of our methodology, based on combining potentiometric and 51V integral and chemical shift data by means of the computer program LAKE, is also given. We list the important steps of equilibrium analysis and the kinds of information available from different sets of NMR spectra. The ligand picolinate is chosen to exemplify our working method, but conclusions are drawn from all systems, reviewing trends and common features. An overview of all systems is given in two tables, including e.g. types and number of species formed. Previously unpublished modelling results at physiological conditions are also shown for all peroxovanadate-ligand systems.

Place, publisher, year, edition, pages
2009. Vol. 103, no 4, 517-526 p.
Keyword [en]
Aqueous speciation, Vanadates, Peroxovanadates, 51V NMR, Physiological conditions, Imidazole, Alanylhistidine, Alanylserine, Uridine, Maltol, Lactate, Citrate, Phosphate, Picolinate
National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Identifiers
URN: urn:nbn:se:umu:diva-11588DOI: 10.1016/j.jinorgbio.2008.12.006OAI: oai:DiVA.org:umu-11588DiVA: diva2:151259
Available from: 2009-01-20 Created: 2009-01-20 Last updated: 2013-02-14Bibliographically approved

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Gorzsás, AndrásAndersson, IngegärdPettersson, Lage

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