Journal ArticleDOI
Thiamine diphosphate-vanadyl(IV) ion interactions: A spectrophotometric study
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In this article, the interaction of thiamine-diphosphate (cocarboxylase) with the VO 2+ cation in solution was investigated by means of spectrophotometric techniques.About:
This article is published in Journal of Inorganic Biochemistry.The article was published on 1990-02-01. It has received 9 citations till now. The article focuses on the topics: Thiamine.read more
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Journal ArticleDOI
Oxovanadium(IV) and oxovanadium(V) complexes relevant to biological systems.
TL;DR: Different aspects of the coordination chemistry of oxovanadium(IV), relevant to the bioinorganic chemistry of vanadium, are presented and their structural, spectroscopic and magnetic properties are briefly discussed.
Journal ArticleDOI
Review: spectroscopic studies of oxovanadium coordination compounds
TL;DR: In this article, a review of the studies of oxovanadium(IV) and oxovadium(V) complexes relevant for the bioinorganic chemistry of vanadium is presented, where the potentialities and possibilities of the spectroscopic methodologies are illustrated and discussed.
Journal ArticleDOI
Darstellung und Eigenschaften von Vanadyl(IV)-Saccharinat
TL;DR: In this paper, the synthesis of a vanadyl(IV)/saccharin complex is reported, which differs considerably from all known divalent metal-saccharinates and its bonding characteristics.
Journal ArticleDOI
The reaction of dimethyltin(IV) dichloride with thiamine diphosphate (H2TDP): synthesis and structure of [SnMe2(HTDP)(H2O)]Cl.H2O, and possibility of a hitherto unsuspected role of the metal cofactor in the mechanism of vitamin-B1-dependent enzymes.
José S. Casas,Eduardo E. Castellano,María D. Couce,Javier Ellena,Agustín Sánchez,José L. Sánchez,José Sordo,Carmen Taboada +7 more
TL;DR: It is suggested that the role of divalent cations in the mechanism of thiamine-diphosphates-dependent enzymes may be not only to anchor the cofactor in its binding site but also to shift the acidic proton of HTDP(-) from the diphosphate group to N(1'); protonation of N( 1') is widely believed to be important for enzyme function, but the origin of the proton has never been clarified.
Journal ArticleDOI
Oxovanadium (IV) complexes of phosphates of biological relevance: NAD+, NADP+ and thiamine mono- and diphosphate
TL;DR: Complex formation between VO(IV) and organic phosphates, NAD+, NADP+, NADP+, TDP, TMP and TMP, has been studied by combined application of pH-potentiometric and spectroscopic techniques.
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Book ChapterDOI
The biochemistry of vanadium
TL;DR: There is ample evidence that vanadium in the body exists primarily as the vanadyl(IV) ion, VO2+, complexed to proteins and other cellular components; several biological reducing agents can convert vanadium(V) to this form.
Journal ArticleDOI
Thiamin diphosphate: a mechanistic update on enzymic and nonenzymic catalysis of decarboxylation
Journal ArticleDOI
The New Biochemistry of Vanadium
Kenneth Kustin,Ian G. Macara +1 more
TL;DR: In the V(V) oxidation state, as diamagnetic vanadate, it mimics phosphate and interacts with a large class of phosphatases and phosphotransferases as discussed by the authors.