Zoroddu, Maria Antonietta and Masia, Andreina (1997) A Novel dimeric oxovanadium (IV) species identified in Saccharomyces cerevisiae cells. Biochimica et Biophysica Acta. Molecular Cell Research, Vol. 1358 (3), p. 249-254. ISSN 0167-4889. Article.
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Saccharomyces cerevisiae cells stored oxovanadium (IV) ions in a dimeric form. In the late stationary phase Saccharomyces cerevisiae cells grown in rich medium containing concentrations of oxovanadium (V), orthovanadate from 12 to 18 mM, causing growth stasis, a dimeric oxovanadium (IV) species was identified by EPR spectroscopy. The EPR spectrum exhibited at 110 K the low-field forbidden ΔMs=±2 transition at g around 4 and the half-field ΔMs=±1 15-lines feature at g around 2 out of the presence of a triplet state by the coupling of the oxovanadium (IV) ions in a dimeric form. Hyperfine splitting of 75.2×10−4 cm−1 and an interionic distance of about 4.4 Å was calculated. The dimeric species was localized in the cellular cytoplasmic space.
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