The rate of the C¹⁴0₂ release from glucose, specifically labeled
with C¹⁴ at 1, 2, 3+4, and positions, was used to study the relative
participation of pathways of glucose catabolism in red beet slices.
Evidence was obtained which indicated that in mature red beets glucose
was catabolized mainly via glycolysis-tricarboxylic...
Partial purification of diamine oxidase from pea seedlings,
Pisum sativum, was accomplished by homogenization of 8-10 day
etiolated epicotyl tissue, followed by ammonium sulfate fractionation
and DEAE Sephadex column chromatography. The preparation thus
obtained was purified 50 fold.
Some properties of this enzyme were investigated. A radio-tracer method was adapted...
Three types of experiments were designed to further characterize
the tryptophan decarboxylating enzyme of Reed and Crecelius
(1967).
1) Light inhibition studies were made with etiolated pea seedlings
to determine the in vitro response of the tryptophan decarboxylating
enzyme. Assays of indoleacetic acid oxidase (IAA oxidase)
and guaiacol-active pea seedling...
Several aspects of the potent inhibition of bovine plasma amine
oxidase (PAO) by hydrazines were investigated by kinetic and preparative
means. The inhibition was classified as pseudo-irreversible
by the method of Ackerman and Potter (Proc. Soc. Exptl. Biol. Med.
72, 1 (1949), and was found to exhibit Zone B kinetic...
The presence in rat liver microsomes of an enzyme system
which demethylates N-methylhydrazines and azo compounds to formaldehyde
has been reported. Some of the compounds found to be
substrates were monomethylhydrazine, N-isopropyl-α-(2-methylhydrazino)-
p-toluamide and the azo derivative of the latter hydrazine. This
enzyme can be classified as a mixed function...
An aspect of the metabolism of monoalkylhydrazines has been
investigated using both intact rats and rat liver microsomal enzyme
preparations.
Intact rats respired propane and n-butane on administration of 0.3-0.5 mmoles of isopropyl- and n-butylhydrazine, respectively.
Based upon dose administered, a five to ten percent
yield of hydrocarbon was obtained....
Bioelectric responses from the isolated eye of the purple shore
crab were measured by the electroretinogram with stimulation by
light from wavelengths of 250 to 800 nm, strontium-yttrium-90 beta
radiation, 17.5 keV x-radiation, and 3-cm microwaves.
Peak sensitivities to light stimulation were found at 350 and 500
nm. These peaks...
More than 3700 fertilized toad eggs were used in a series of
studies designed to determine the effects of UV-B radiation (290-
315 nm) on temporal developmental patterns, systematic development
and viability prior to metamorphic climax. The eggs were
exposed to radiation from either "white-light" fluorescent lamps
(Vita-Lite, Duro-Test Corporation,...
The behavioral repertoire of the sea anemone, Anthopleura
xanthogrammica, was investigated to test for the occurrence of any
immediate response to various regions of the electromagnetic spectrum.
Monochromatic radiations in the visible and ultraviolet spectral
regions were produced by a 150-watt xenon lamp or a ZOO watt mercury
vapor lamp...