Now showing items 41-50 of 426
Thermodynamics of the lanthanide halides I. Heat capacities and Schottky anomalies of LaCl3, PrCl3, and NdCl3 from 5 to 350 K
(Elsevier, 1976-12)
The heat capacities of LaCl3, PrCl3, and NdCl3 have been measured from 5 to 350 K by adiabatic calorimetry. No co-operative thermal anomalies were seen in the temperature range investigated but substantial magnetic ...
D-Glucuronic acid: A non-inhibitor of the concanavalin A system
(Elsevier, 1972-06-22)
D-Glucuronic acid is demonstrated not to inhibit the concanavalin A system; previous claims to the contrary are shown to be due to a pH effect. Concanavalin A does not precipitate biopolymers containing nonreducing, terminal ...
Joining of simian virus 40 DNA molecules at endonuclease R Eco RI sites by polynucleotide ligase and analysis of the products by agarose gel electrophoresis
(Elsevier, 1976-07-02)
DNA molecules cut with endonuclease R Eco RI can be joined at Eco RI cleavage sites by incubation with polynucleotide ligase. In order to define the optimum conditions for this reaction, linear Simian Virus 40 DNA molecules ...
Tritium exchange reactions catalyzed by 2-oxo-4-hydroxyglutarate aldolase from Escherichia coli K-12
(Elsevier, 1979-05-10)
Tritiated water and tritiated substrates have been used to study exchange reactions catalyzed by Escherichia coli 2-oxo-4-hydroxyglutarate aldolase (4-hydroxy-2-oxoglutarate glyoxylate-lyase, EC 4.1.3.16, 2-oxo-4-hydroxyglutarate ...
Heterogeneity of histidine transport in the Ehrlich cell
(Elsevier, 1976-11-11)
We have reexamined the heterogeneity shown by histidine in its uptake by the Ehrlich ascites tumor cell, in the face of a contradiction of our earlier interpretation. We again find the fraction of histidine uptake at neutral ...
Effect of anions on the catalytic activity of pig liver glycolic acid oxidase
(Elsevier, 1971-03-10)
1. 1. Pig liver glycolic acid oxidase (glycolate: O2 oxidoreductase, EC 1.1.3.1) can function with either 2,6-dichlorophenolindophenol (DCIP) ([nu]max = 1250 moles of glycolate per mole of flavin per min) or O2 ([nu]max = ...
An "extension" of the carbohydrate binding specificity of concanavalin A
(Elsevier, 1973-08-30)
Evidence based on the quantitative precipitin method and hapten inhibition technique demonstrates that concanavalin A may interact with internal 2-O-linked [alpha]--mannopyranosyl residues as may occur in glycoproteins and ...
Trimethylstannyl-2,4-cycloheptadiene: A fluxional molecule
(Elsevier, 1972-05-16)
Trimethylstannyl-2,4-cycloheptadiene (II) was synthesized and shown to be fluxional on the NMR time scale. The activation energy for the [1,5] trimethyltin migration is estimated to be ca. 18 kcal/mole. This value is ...
The control of fatty acid composition in glycerolipids of the endoplasmic reticulum
(Elsevier, 1970-02-03)
A functional relationship between constitutive enzymes of the endoplasmic reticulum that are involved in lipid metabolism and the proteins and phosphoglycerides constituting these membranes was examined by altering the ...