Now showing items 311-318 of 318
Interaction of heat-denatured HeLa cell DNA with synthetic and natural polysaccharides
(Wiley Subscription Services, Inc., A Wiley Company, 1968-11)
Heat-denatured DNA from HeLa cells interacts with natural as well as synthetic polysaccharides. Glucose does not inhibit the interaction nor will it produce it. Polysaccharides with a molecular weight of 10000 or greater ...
The destruction of indoleacetic acid. III. Relationships between peroxidase action and indoleacetic acid oxidation
(Elsevier, 1960-03)
The indoleacetic acid (IAA)-oxidizing enzyme preparation from Omphalia flavida exhibits peroxidase activity on pyrogallol with an optimum at pH 3.5-3.7, like that for the IAA-oxidizing activity. It shows no polyphenolase ...
Purification of pyridine for voltammetric studies : Effect of impurities
(Elsevier, 1967)
Purification of pyridine by zone fractional crystallization reduces the concentration of prewave-producing contaminant below polarographic detection limits, i.e., 0.01 mM. A qualitative test based on the stability of the ...
Seed germination studies II. Pathways for starch degradation in germinating pea seedlings
(Elsevier, 1966-07-06)
Amylase activity is present in extracts of the axis tissue of etiolated pea seedlings. Several lines of evidence establish that this starch-hydrolyzing activity is due to the presence of a [beta]-amylase ([alpha]-1,4-glucan ...
Reconstitution of oxidative phosphorylation in submitochondrial particles by a soluble protein phosphoryl transferase
(Elsevier, 1968-01)
A protein designated phosphoryl transferase has been isolated from beef heart mitochondria and has been found to increase the ability of Submitochondrial particles, oxidizing either NADH or succinate, to synthesize ATP ...
Isotopic tracer studies on the biosynthesis of deoxyribose in the rat
(Elsevier, 1963)
The biosynthesis of deoxyribose, in vivo, was studied with NaH14CO3 as a tracer, in normal adult, starved adult, normal newborn, "thiamine-deficient" adult and "tumor bearing" rats and in Yoshida ascites-tumor cells. ...