Results 121 to 130 of about 10,670 (160)

Rapid oxidation of dl-selenomethionine by peroxynitrite

Free Radical Biology and Medicine, 1996
Peroxynitrite, the reaction product of nitric oxide and superoxide, rapidly oxidizes DL-selenomethionine (MetSe) with overall second-order kinetics, first-order in peroxynitrite and first-order in MetSe. The oxidation of MetSe by peroxynitrite goes by two competing mechanism. The first produces ethylene by what we propose to be a one-electron oxidation
S, Padmaja, G L, Squadrito, J N, Lemercier, R, Cueto, W A, Pryor   +4 more
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A CLINICAL EVALUATION OF THE SELENOMETHIONINE UPTAKE TEST

BJOG: An International Journal of Obstetrics & Gynaecology, 1970
SummaryThe 75Se‐Selenomethionine uptake test for placental competence has been performed on 467 patients. No adverse reactions attributable to the test have been found.Average values for the uptake ratio at each week of gestation from 32 to 43 weeks are given.
P, Lee, J S, Garrow
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Characterization of selenomethionine in proteins

1984
Publisher Summary This chapter discusses the characterization of selenomethionine in proteins. The incorporation of selenium into protein occurs both specifically and nonspecifically. When selenium concentrations approach or exceed those of sulfur, random substitution of selenium for sulfur can occur.
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Selenomethionine Labeling of Recombinant Proteins

2007
Selenomethionine incorporation is a standard method for determining the phases in protein crystallography by single- or multiwavelength anomalous dispersion. Recombinant expression of selenomethionine-containing protein in non-auxotrophic Pichia pastoris strains yield an incorporation of about 50%.
Anna M, Larsson, T Alwyn, Jones
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Selenomethionine content of candidate reference materials

Fresenius' Journal of Analytical Chemistry, 2001
Selenium has been identified as an antioxidant of importance in the diet. Accurate determination of its chemical forms depends on the availability of suitable reference materials (RMs). Two candidate reference materials for determination of selenomethionine (Semet) in food-related materials, a standard wheat gluten sample (NIST RM 8418 Wheat Gluten ...
W R, Wolf, H, Zainal, B, Yager
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Metabolism of Selenite and Selenomethionine in the Rhesus Monkey

The Journal of Nutrition, 1990
Female rhesus monkeys were fed a commercial monkey diet and given selenium (Se) as either selenite or selenomethionine (SeMet) in the drinking water for 11 mo. Muscle and liver biopsies were taken initially and at the end of the experiment for determination of Se levels and glutathione peroxidase (GPX) activity.
J A, Butler, P D, Whanger, A J, Kaneps, N M, Patton   +3 more
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Intestinal Transport of Selenium-75 Selenomethionine

Science, 1962
When measured simultaneously, selenium-75 selenomethionine accumulated identically with sulfur-35 methionine across everted hamster intestinal sacs in the presence of carrier methionine. The apparent K m for L-methionine transport was 0.8 × 10 -3 M , as calculated from
R P, SPENCER, M, BLAU
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Selenomethionine liver scanning in the diagnosis of hepatoma

The British Journal of Radiology, 1980
Liver subtraction scans using 99Tcm sulphur coloid and 75Se-selenomethionine were carried out in 58 patients with suspected hepatoma. Of the 18 patients with hepatoma proven by histology, 16 showed selective concentration of selenomethionine in the tumour, giving a true positive rate of 89%. Of the 40 patients who did not have hepatoma, 32 scans showed
A J, Coakley, E P, Wraight
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Accelerated chromatographic analysis of selenocystine and selenomethionine

Analytical Biochemistry, 1969
Abstract 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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The detection of parathyroid tumours by selenomethionine scanning

The British Journal of Radiology, 1968
Abstract 1. The necks of 12 patients with parathyroid tumours have been scanned after the intravenous injection of radioactive selenomethionine. In ten of these cases the diagnosis made on the scan has been checked against the findings at operation. 2.
J S, Garrow, R, Smith
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