Now showing items 31-40 of 85
Radiometric assay for cytochrome P-450-catalyzed progesterone 16[alpha]-hydroxylation and determination of an apparent isotope effect
(Elsevier, 1987-08-01)
In the course of studies on the oxygenation of steroids by purified P-450 cytochromes, particularly rabbit liver microsomal cytochrome P-450 form 3b, a rapid and reliable radiometric assay has been devised for progesterone ...
Fragmentative and stereochemical isomerization probes for homolytic carbon to phosphorus bond scission catalyzed by bacterial carbon-phosphorus lyase
(Elsevier, 1987-12)
Three bacterial strains, Agrobacterium radiobacter, Klebsiella oxytoca, and Kluyvera ascorbata, isolated by enrichment culture for carbon to phosphorus bond cleavage ability, were analyzed for the mode of C---P bond fission. ...
Properties of the enzymes catalyzing the biosynthesis of lysophosphatidate and its ether analog in cultured fibroblasts from Zellweger syndrome patients and normal controls
(Elsevier, 1987-05-01)
The activities, properties, and steady-state kinetics of the five enzymes catalyzing the synthesis of 1-acyl- and 1-alkyl-sn-glycerol 3-phosphate in the cultured skin fibroblasts from Zellweger syndrome patients and normal ...
On the dynamics of the irreversible Michaelis-Menten reaction mechanism
(Elsevier, 1987)
The mass action kinetic model of the irreversible Michaelis-Menten reaction mechanism is mathematically intractable: an explicit analytical solution cannot be obtained. This difficulty is overcome by applying simplifying ...
Properties of the lectin from the hog peanut (Amphicarpaea bracteata)
(Elsevier, 1987-05-15)
An N-acetyl--galactosamine-specific lectin has been isolated from the two seed forms of the hog peanut (Amphicarpaea bracteata) using an affinity support containing the synthetic type A blood group trisaccharide ...
Exercise-induced hyperphagia in the hamster is associated with elevated plasma somatostatin-like immunoreactivity
(Elsevier, 1987-08-03)
Syrian golden hamsters when allowed free access to food and an exercise wheel will run long distances and develop hyperphagia and accelerated linear body growth with high circulating levels of growth hormone and insulin. ...
Thermodynamic properties of RuSe2 from 5 to 1500 K
(Elsevier, 1987-10)
The heat capacity of RuSe2 has been measured in the range from 5 to 988 K with adiabatic low- and high-temperature calorimeters. From 882 to 1483 K a drop calorimeter was used to measure enthalpy increments of the compound. ...
Thermodynamics of thallium alkanoates III. Heat capacity and thermodynamic functions of thallium(I) n-tetradecanoate from 7 to 450 K
(Elsevier, 1987-03)
The heat capacity of thallium(I) n-tetradecanoate was measured by adiabatic calorimetry to 350 K and by d.s.c. from 235 through 460 K. Good agreement between the methods was obtained within the common temperature range. ...
Thermodynamics of copper sulfides II. Heat capacity and thermodynamic properties of synthetic covellite, CuS, from 5 to 780.5 K. Enthalpy of decomposition
(Elsevier, 1987-11)
The heat capacity of CuS has been measured by adiabatic shield calorimetry from 5 to 840 K. The heat capacity increases regularly up to about 750 K and then more strongly as the decomposition temperature (780.5 K) of ...
Folylpolyglutamates as substrates and inhibitors of folate-dependent enzymes
(Elsevier, 1987)
The true intracellular substrates for folate-dependent enzymes are folylpolyglutamates. We have used measurements of the Ki values of folylpolyglutamate dead end inhibitors to assess the relative affinities of folate-dependent ...