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Showing 1-30 of 33 results for "GF33636753" within Papers
Samar Al Sayegh Petkovšek et al.
Environmental monitoring and assessment, 186(7), 4261-4274 (2014-03-13)
The transfer of lead, cadmium, zinc, mercury, copper and molybdenum from soil to the tissues of small mammals inhabiting differently polluted areas in Slovenia was investigated. Metals were determined in soil samples and in the livers of 139 individuals of
Ralf R Mendel
Journal of experimental botany, 58(9), 2289-2296 (2007-03-14)
The transition element molybdenum (Mo) is an essential micronutrient for plants where it is needed as a catalytically active metal during enzyme catalysis. Four plant enzymes depend on molybdenum: nitrate reductase, sulphite oxidase, xanthine dehydrogenase, and aldehyde oxidase. However, in
Maria João Romão
Dalton transactions (Cambridge, England : 2003), (21)(21), 4053-4068 (2009-05-20)
Molybdenum and tungsten enzymes which contain the pyranopterin cofactor are ubiquitous in Nature and perform a wide variety of biological functions. They catalyze a diversity of mostly two-electron oxidation-reduction reactions crucial in the metabolism of nitrogen, sulfur and carbon. These
Felix Bulcke et al.
Nanotoxicology, 8(7), 775-785 (2013-07-31)
To test for consequences of an exposure of brain cells to copper oxide nanoparticles (CuO-NPs), we synthesised and characterised dimercaptosuccinate-coated CuO-NPs. These particles had a diameter of around 5 nm as determined by transmission electron microscopy, while their average hydrodynamic
Chantal Iobbi-Nivol et al.
Biochimica et biophysica acta, 1827(8-9), 1086-1101 (2012-12-04)
Molybdenum cofactor (Moco) biosynthesis is an ancient, ubiquitous, and highly conserved pathway leading to the biochemical activation of molybdenum. Moco is the essential component of a group of redox enzymes, which are diverse in terms of their phylogenetic distribution and
Courtney E Sparacino-Watkins et al.
The Journal of biological chemistry, 289(15), 10345-10358 (2014-02-07)
Mitochondrial amidoxime reducing component (mARC) proteins are molybdopterin-containing enzymes of unclear physiological function. Both human isoforms mARC-1 and mARC-2 are able to catalyze the reduction of nitrite when they are in the reduced form. Moreover, our results indicate that mARC
Ralf R Mendel
Plant cell reports, 30(10), 1787-1797 (2011-06-11)
The transition element molybdenum (Mo) is of essential importance for (nearly) all biological systems as it is required by enzymes catalyzing important reactions within the cell. The metal itself is biologically inactive unless it is complexed by a special cofactor.
Luis M Rubio et al.
Annual review of microbiology, 62, 93-111 (2008-04-24)
The iron-molybdenum cofactor (FeMo-co), located at the active site of the molybdenum nitrogenase, is one of the most complex metal cofactors known to date. During the past several years, an intensive effort has been made to purify the proteins involved
Maria Lyra et al.
Hellenic journal of nuclear medicine, 14(1), 49-55 (2011-04-23)
The sleeping giant of molybdenum-99 ((99)Mo) production is grinding to a halt and the world is wondering how this happened. Fewer than 10 reactors in the world are capable of producing radio nuclides for medicine; approximately 50% of the world's
Mohammad-Reza Rashidi et al.
Expert opinion on drug metabolism & toxicology, 6(2), 133-152 (2010-01-26)
Molybdenum hydroxylases, aldehyde oxidase and xanthine oxidase, are metalloflavoproteins that catalyze both oxidation and reduction of a broad range of drugs and other xenobiotics indicating the importance of these enzymes in drug oxidation, detoxification and activation. Both enzymes are also
Viswanathan S Saji et al.
ChemSusChem, 5(7), 1146-1161 (2012-06-14)
The electrochemical behaviors of molybdenum and its oxides, both in bulk and thin film dimensions, are critical because of their widespread applications in steels, electrocatalysts, electrochromic materials, batteries, sensors, and solar cells. An important area of current interest is electrodeposited
Li Lv et al.
Journal of nanoscience and nanotechnology, 14(5), 3521-3526 (2014-04-17)
In this work, we report the size and shape-controlled synthesis of CaMoO4 nanocrystals with an aim of investigate their structural, electronic, and luminescent properties. The samples were carefully characterized by X-ray diffraction, transmission electron microscopy, Fourier transformed infrared spectroscopy, UV-vis
Claudio Pérez et al.
Environmental toxicology and chemistry, 33(10), 2217-2224 (2014-03-22)
High levels of oxyanions are found in the soil environment, often as a result of human activity. At high concentrations, oxyanions can be harmful to both humans and wildlife. Information about the interactions between oxyanions and natural samples is essential
Ralf R Mendel
The Journal of biological chemistry, 288(19), 13165-13172 (2013-03-30)
The transition element molybdenum needs to be complexed by a special cofactor to gain catalytic activity. Molybdenum is bound to a unique pterin, thus forming the molybdenum cofactor (Moco), which, in different variants, is the active compound at the catalytic
Sabine Goldberg
Environmental toxicology and chemistry, 33(10), 2172-2180 (2014-03-13)
Various chemical models of ion adsorption are presented and discussed. Chemical models, such as surface complexation models, provide a molecular description of anion adsorption reactions using an equilibrium approach. Two such models, the constant capacitance model and the triple layer
Krystyna Pyrzynska
Analytica chimica acta, 590(1), 40-48 (2007-04-10)
Determination of molybdenum in different kinds of environmental samples is often a challenging task for analysts. Its concentration is usually very low and the sample matrix may cause serious interferences during measurement. Therefore, preconcentration and separation methods should be used
Ralf R Mendel
BioFactors (Oxford, England), 35(5), 429-434 (2009-07-23)
The transition element molybdenum (Mo) is an essential micronutrient that is needed as catalytically active metal during enzyme catalysis. In humans four enzymes depend on Mo: sulfite oxidase, xanthine oxidoreductase, aldehyde oxidase, and mitochondrial amidoxime reductase. In addition to these
Angel Llamas et al.
Metallomics : integrated biometal science, 3(6), 578-590 (2011-05-31)
Molybdenum (Mo) is a very scarce element whose function is fundamental in living beings within the active site of Mo-oxidoreductases, playing key roles in the metabolism of N, S, purines, hormone biosynthesis, transformation of drugs and xenobiotics, etc. In eukaryotes
Yilin Hu et al.
Microbiology and molecular biology reviews : MMBR, 75(4), 664-677 (2011-12-01)
Nitrogenase catalyzes a key step in the global nitrogen cycle, the nucleotide-dependent reduction of atmospheric dinitrogen to bioavailable ammonia. There is a substantial amount of interest in elucidating the biosynthetic mechanisms of the FeMoco and the P-cluster of nitrogenase, because
Hongnan Cao et al.
Journal of natural products, 77(7), 1693-1699 (2014-07-26)
Xanthine oxidase catalyzes the sequential hydroxylation of hypoxanthine to uric acid via xanthine as intermediate. Deposition of crystals of the catalytic product uric acid or its monosodium salt in human joints with accompanying joint inflammation is the major cause of
Manuel Tejada-Jiménez et al.
Metallomics : integrated biometal science, 5(9), 1191-1203 (2013-06-27)
The viability of plants relies on molybdenum, which after binding to the organic moiety of molybdopterin forms the molybdenum cofactor (Moco) and acquires remarkable redox properties. Moco is in the active site of critical molybdoenzymes, which use to work as
Ralf R Mendel et al.
Biochimica et biophysica acta, 1823(9), 1568-1579 (2012-03-01)
The transition element molybdenum (Mo) needs to be complexed by a special cofactor in order to gain catalytic activity. With the exception of bacterial Mo-nitrogenase, where Mo is a constituent of the FeMo-cofactor, Mo is bound to a pterin, thus
Pl Morgan et al.
New Zealand veterinary journal, 62(3), 167-170 (2013-11-13)
Abstract A Jersey herd of 350 cows and 70 heifers located in the Taranaki region of New Zealand ceased milking in June 2011. Ten cows died during the subsequent 14 days. For at least 9 months, the cows had received
Lidia Regoli et al.
The Science of the total environment, 435-436, 96-106 (2012-08-01)
In a regulatory context, bioaccumulation or bioconcentration factors are used for considering secondary poisoning potential and assessing risks to human health via the food chain. In this paper, literature data on the bioaccumulation of molybdenum in the aquatic organisms are
Tingyu Shi et al.
Journal of cellular biochemistry, 112(10), 2721-2728 (2011-06-17)
When intracelluar pathogens enter the host macrophages where in addition to oxidative and antibiotic mechanisms of antimicrobial activity, nutrients are deprived. Human pathogen Mycobacterium tuberculosis is one of macrophage parasitisms, which can replicate and persist for decades in dormancy state
Nga T Nguyen et al.
Journal of bioscience and bioengineering, 118(4), 386-391 (2014-04-23)
Membrane-bound formate dehydrogenase (FDH) was purified to homogeneity from a facultative anaerobic bacterium Citrobacter sp. S-77. The FDH from Citrobacter sp. S-77 (FDHS77) was a monomer with molecular mass of approximately 150 kDa. On SDS-PAGE, the purified FDHS77 showed as three
Hanmei Hu et al.
Journal of nanoscience and nanotechnology, 14(6), 4462-4468 (2014-04-18)
A mild one-pot hydrothermal route has been successfully designed to controllably prepare orthorhombic alpha-MoO3 nanobelts and monoclinic MoO2 microaxletrees respectively by adjusting the dosage of (NH4)6M07O24 x 4H2O (AHM). The products are characterized by X-ray diffraction (XRD), field-emission scanning electron
Bernd Masepohl et al.
Advances in experimental medicine and biology, 675, 49-70 (2010-06-10)
The vast majority of the purple nonsulfur photosynthetic bacteria are diazotrophs, but the details of the complex regulation of the nitrogen fixation process are well understood only for a few species. Here we review what is known of the well-studied
P L Smedley et al.
Environmental monitoring and assessment, 186(10), 6403-6416 (2014-07-12)
An investigation has been carried out of molybdenum in drinking water from a selection of public supply sources and domestic taps across England and Wales. This was to assess concentrations in relation to the World Health Organization (WHO) health-based value
Hideki Sugimoto et al.
Chemical Society reviews, 37(12), 2609-2619 (2008-11-21)
Recent characterisation of molybdenum and tungsten enzymes revealed novel structural types of reaction centres, as well as providing new subjects of interest as synthetic chemical analogues. This tutorial review highlights the structure/reactivity relationships of the enzyme reaction centres and chemical
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