Results 191 to 200 of about 18,634 (212)
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The utilization of selenomethionine by Escherichia coli
Biochimica et Biophysica Acta (BBA) - General Subjects, 1971Abstract The replacement of methionine by selenomethionine has been investigated in Escherichia coli . The analog is relatively non-toxic to growth of E. coli 26 at concentrations as high as 0.01 M, provided cysteine is added to the growth medium.
E H, Coch, R C, Greene
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Brain Uptake of Selenomethionine Se 75
Archives of Neurology, 1971Brain uptake of selenomethionine Se 75 following intravenous injection was studied in nine subjects with phenylketonuria (PKU) and 12 matched mentally retarded controls. Brain content following injection was monitored continuously for 20 minutes using a gamma radiation detector sampling a fixed volume of brain.
W H, Oldendorf +2 more
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Selenomethionine Uptake by Wheat Seedlings
Agronomy Journal, 1990AbstractSelenium acquisition by crops is of interest because it is an essential element for higher animals and because excessive levels are toxic to humans and livestock. This research was conducted to test whether uptake by plants of an important organic Se compound, selenomethionine, occurred through a metabolically active process.
M. M. Abrams +3 more
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The Raman spectra of selenomethionine and selenocystine
Journal of Inorganic Biochemistry, 1981The trace element selenium is known to be a part of the enzyme glutathione peroxidase (glutathione-hydrogen peroxide oxidoreductase, E.C.1.11.1.9). Studies have shown that selenium in the enzyme exists in at least two forms or oxidation states. It is probable that selenium has been incorporated into the enzyme as the selenocysteine amino acid.
J, Lopez, T C, Jao, W E, Rudzinski
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Selenomethionine contents of NIST wheat reference materials
Analytical and Bioanalytical Chemistry, 2004Values of the total selenium and selenomethionine (Semet) content of four wheat-based reference materials have been obtained by gas chromatography-stable isotope dilution mass spectrometry methods. The total Se method is an established one, and the results obtained with it are consistent with previously-assigned values.
Wayne R, Wolf, Robert J, Goldschmidt
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Accelerated chromatographic analysis of selenocystine and selenomethionine
Analytical Biochemistry, 1969Abstract The chromatographic separation of selenocystine and selenomethionine was performed in 45 and 90 minutes, respectively, on the spherical resin, type PA-35, using one buffer, one temperature, and one buffer flow rate. Variations in buffer flow rate, buffer pH and ionic strength, column temperature, and their effects on peak elution times, are ...
J V, Benson, J A, Patterson
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Some chemical and biochemical properties of selenomethionine
Canadian Journal of Biochemistry, 1969Some chemical properties important to the biochemistry of the amino acid analogue selenomethionine were studied. It was found to be less soluble in demineralized distilled water, much less stable to acid hydrolysis, and of a different infrared spectrum than methionine itself.
L, Shepherd, R E, Huber
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Thyroparathyroid Uptake of Selenomethionine in the Rat
Endocrinology, 196775Se-selenomethionine has been used clinically for parathyroid and pancreas scintiscanning. This study analyzes the time sequence of selenomethionine uptake by the parathyroid and thyroid glands and the effects of thyroxine pretreatment and a low calcium diet on this uptake. The parathyroid uptake curve shows a peak in activity at 20 min when the blood
E J, Ptochen, H G, Watts
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