Exchange rate of trimethyl phosphate on bis(trimethyl phosphate)-bis(thenoyltrifluoroacetonato)nickel(II) and -cobalt(II) as measured by phosphorus-31 magnetic resonance.
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چکیده
منابع مشابه
Phosphate metabolism in intact human erythrocytes: determination by phosphorus-31 nuclear magnetic resonance spectroscopy.
Whole human blood was examined by (31)P nuclear magnetic resonance spectroscopy. Individual phosphates (alpha,beta,gamma) of ATP were identifiable, and two microenvironments appeared to be present for this molecule. When sequential recordings of freshly collected blood were made, 2,3-diphosphoglycerate was observed to decrease in association with a concomitant increase in inorganic orthophospha...
متن کاملEvaluation of high-energy phosphate metabolism during cardioplegic arrest and reperfusion: a phosphorus-31 nuclear magnetic resonance study.
Hypothermic potassium cardioplegia is now commonly used to protect the myocardium during surgically induced ischemia. Because the potassium-related membrane depolarization has been shown to increase calcium influx, we undertook this study to define the effects of varying the calcium content in hyperkalemic perfusates and the effects of using magnesium instead of or in addition to potassium as t...
متن کاملPhosphorus 31 Magnetic Resonance Spectroscopy Study
or acutely with verapamil. Left ventricular hypertrophy was induced by suprarenal constriction of the abdominal aorta. Hemodynamics and phosphorus 31 magnetic resonance spectra were monitored simultaneously in the isolated hearts during control perfusion, after 30 minutes of global ischemia, and after 30 minutes of reperfusion. All hypertrophied hearts had significantly higher rate-pressure pro...
متن کاملIsotopic (18O) shift in 31P nuclear magnetic resonance applied to a study of enzyme-catalyzed phosphate--phosphate exchange and phosphate (oxygen)--water exchange reactions.
An isotopic shift of the (31)P nuclear magnetic resonance due to (18)O bonded to phosphorus of 0.0206 ppm has been observed in inorganic orthophosphate and adenine nucleotides. Thus, the separation between the resonances of (31)P(18)O(4) and (31)P(16)O(4) at 145.7 MHz is 12 Hz and, in a randomized sample containing approximately 50% (18)O, all five (16)O-(18)O species are resolved and separated...
متن کاملLocation of Phosphate Esters in a Wheat Starch Phosphate by 3 " P - Nuclear Magnetic Resonance Spectroscopy '
Cereal Chem. 70(2):145-152 Phosphate esters of D-glucose, methyl c-D-glucopyranoside, and on potato starch were confirmed to be the 6and 3-esters. The wheat maltose, as well as the a,,y-limit phosphodextrins from native potato starch phosphate, prepared by heating starch with sodium tripolystarch (degree of substitution [DS] 0.0033) and phosphorylated amylose phosphate under semidry conditions ...
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ژورنال
عنوان ژورنال: Analytical Sciences
سال: 1987
ISSN: 0910-6340,1348-2246
DOI: 10.2116/analsci.3.85