The 90-kDa heat-shock protein (Hsp90) is a molecular chaperone that aids the folding of nuclear hormone receptors and protein kinases. Hsp90 x protein complexes can be stabilized by molybdate and by other transition metal oxyanions such as vanadate. Our earlier findings [Csermely, P., Kajtár, J., Hollósi, M., Jalsovszky, G., Holly, S., Kahn, C. R., Gergely, P. Jr, Söti, C., Mihály, K. & Somogyi...

We compare aspects of biological X-ray absorption spectroscopy (XAS) studies of cations and anions, and report on some examples of anion binding in biological systems. Brown algae such as Laminaria digitata (oarweed) are effective accumulators of I from seawater, with tissue concentrations exceeding 50 mM, and the vanadate-containing enzyme haloperoxidase is implicated in halide accumulation. W...

A method for the simple and efficient microwave radiation-assisted hydrothermal synthesis of Fe2(MoO4)3 has been developed. Several factors such as pH, addition rate, molybdenum precursor, type solvent various other parameters are studied. The catalysts were characterized using X-ray diffraction, scanning electron microscopy, Mössbauer spectroscopy specific surface area measurements. results sh...

The title complex, [(C(4)H(9))(4)N](2)[Mo(6)(C(7)H(6)ClN)O(18)], was prepared by the reaction of (Bu(4)N)(4)[α-Mo(8)O(26)] and 2-methyl-5-chloro-aniline hydro-chloride with N,N'-dicyclo-hexyl-carbodiimide as dehydrating agent in dry acetonitrile solution. The aryl-imido ligand is linked to an Mo atom of the Lindqvist-type hexamolybdate anion by an Mo N triple bond, with a bond length of 1.732 (...

The crystal structure of the title compound, [C(NH(2))(3)](6)[Mo(7)O(24)]·H(2)O, previously determined at room temperature in the monoclinic space group C2/c from Weissenberg techniques [Don & Weakley (1981 ▶). Acta Cryst. B37, 451-453], has been redetermined from low-temperature single-crystal data in the monoclinic space group P2(1)/c. The asymmetric unit contains one hepta-molybdate anion, s...

The title compound, (NH(4))(2)[Cu(C(2)H(4)NO(2))(C(10)H(8)N(2))(C(3)H(7)NO)](2)[Mo(8)O(26)], contains a centrosymmetric β-type octa-molybdate anion, two copper(II) complex cations and two ammonium ions. The Cu(II) atom is coordinated in a square-pyramidal geometry by a 2,2'-bipyridine and a 2-amino-acetate ligands in the basal plane and by an O atom of N,N-dimethyl-formamide in the apical posit...

The phosphohydrolase activity of a light microsomal fraction isolated from corn roots (Zea mays L. cv LG 55) was investigated. The fraction, which appears to be enriched in endoplasmic reticulum and Golgi membranes, has ATPase and pyrophosphatase activities that hydrolyze ATP and pyrophosphate at an optimum pH of 7.0, with K(m) values of about 160 and 240 micromolar and with V(max) values of ab...

Tungsten has no known function in humans and is a relatively new contaminant, whereas molybdenum, its congener the periodic table, nutritionally essential element. In addition to early studies on molybdosis ruminants, their toxic effects form of tungstate molybdate have been addressed primarily rodents are predominantly mediated by inducing oxidative stress various tissues. The purpose this stu...

In this study, the effect of molybdate on the electrochemical behavior and semi-conductive properties of duplex stainless steel 2205 passive film at NaCl solutions was investigated. Cyclic potentiodynamic polarization, impedance spectroscopy, mott-schottky plots and scanning electron microscopy (SEM) were used to study the passive behavior. Polarization curves showed that the corrosion current ...