Now showing items 1-10 of 16
Free and nonprotein amino acids of Tetrahymena pyriformis
(Elsevier, 1956-05)
Paper chromatography was used to determine 20 amino acids and related compounds present in both the free and the nonprotein forms in Tetrahymena pyriformis. The most abundant free amino acids in the cells were found to be ...
Effect of dinitrophenol on the interaction between myosin and nucleotides
(Elsevier, 1959-04)
1. 1. The effects of 2,4-dinitrophenol (DNP) on the interaction of several nucleoside triphosphates with myosin B and glycerol-treated psoas fibers have been studied at 0.3 M KCl, 10-3 M Ca++, pH 7.0, 25.5 [deg]C.2. 2. The ...
Glycolytic activity in extracts of young rat skin
(Elsevier, 1959-01)
1. 1. Data have been presented which indicate the presence of most of the glycolytic enzymes in the skin of the young rat.2. 2. A cell-free extract of this tissue will stoichiometrically convert fructose diphosphate to ...
Physiology of the cell surface of Neurospora ascospores. II. Interference with dye adsorption by polymyxin
(Elsevier, 1956-05)
Polymyxin B prevents the germination of ascospores of Neurospora tetrasperma with an LD50 of 3-4 p.p.m. The toxic effect of polymyxin is partially reversed by calcium and magnesium ions. The effect of polymyxin on the ...
The metabolism of Brucellae: The oxidation of succinate as a function of pH and concentration
(Elsevier, 1956-10)
The marked difference between the rates of succinate uptake and oxidation by Brucella abortus that occurs when the concentration of hydrogen ions or the substrate is grossly increased was accounted for predominantly in ...
The metabolism of Brucellae: The nature of the effects of pH and concentration on the rate of oxidation of succinate
(Elsevier, 1956-10)
The sharp rise in the rate of oxidation of succinate by Brucella abortus that occurs with gross increases in hydrogen ion or the substrate concentration was accompanied by an even greater degree of increase in the rate of ...
Peptic hydrolysis of ovalbumin modified by acetylation,
(Elsevier, 1957-09)
1. 1. Two types of acetylated ovalbumin derivatives designated as N-and N,O-acetylovalbumin were prepared by treatment with ketene at pH's 5.6 and 9.0, respectively.2. 2. Both limited and extensive acetylation decreases ...
A method for the determination of guanidoacetic acid and arginine in biological fluids,
(Elsevier, 1959-12)
A method for the determination of either arginine or guanidoacetic acid or both in biological materials has been presented. The method is based on the chromatographic separation of arginine from guanidoacetic acid and the ...
Synthesis of B vitamins by excised parts of White lupine seedlings grown in sterile culture
(Elsevier, 1954-09)
In this investigation it has been found that excised roots, hypocotyls, and epicotyls of White lupine seedlings synthesize thiamine, riboflavin, and niacin when grown in sterile cultures. Oxygen is necessary for this synthesis.