Absence of Malic Enzyme in Calf Liver
نویسندگان
چکیده
منابع مشابه
Malic Enzyme of Escherichia coli
The TPN+-specitk malic enzyme from Escherichia coli has been purified from malate-grown cells. An approximately loo-fold purified preparation is activated by NH4+ and K+ ions. The enzyme is inhibited by acetyl coenzyme A, oxalacetate, TPNH, and DPNH in an allosteric manner. Glycine at concentration ranges above 0.5 M has been shown to activate the enzyme as well as to desensitize it reversibly ...
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Cells isolated from the livers of 17- to 19-day-old chick embryos were maintained in a chemically defined culture medium. During 3 days in culture the activity of malic enzyme, a measure of its concentration, was stimulated 2-, 23-, or 77-fold by insulin, triiodothyronine, or insulin plus triiodothyronine, respectively. Glucagon blocked the stimulation caused by insulin plus triiodothyronine. C...
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We measured the activity of cytosolic and of mitochondrial malic enzyme in the hearts from 4 patients with Friedreich's disease and from two non-ataxic control subjects. There was a wide variability in the results and the slight overall decreases in both enzyme activities were not considered to be statistically significant. From these and other results, we conclude that deficient mitochondrial ...
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Because of the strongly exergonic nature of glycolysis, the formation of carbohydrate from lactate and pyruvate does not proceed readily by direct reversal of the Embden-MeyerhofCori pathway (1). Additional energy for glycogen synthesis may be supplied at three separate steps: by hydrolysis of a sugar phosphate at the step fructose diphosphate + fructose 6-phosphate; by the utilization of uridi...
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The incubation of maize malic enzyme at 37 degrees C with trypsin at a ratio of 150:1 of malic enzyme to trypsin caused rapid and complete inactivation of enzyme activity. The inactivation was caused by fairly specific cleavage of the enzyme monomer (62 kDa) into 40 kDa and 20 kDa fragments. The intensity of 40 kDa band increased with the time of treatment of enzyme with trypsin from 2 to 30 mi...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1965
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(65)88339-4