Now showing items 31-40 of 63
Nuclear phosphoproteins : II. Metabolism of exogenous phosphoprotein by intact nuclei
(Elsevier, 1969-02-04)
When 32P-labeled phosphoprotein is added to a suspension of calf thymus nuclei, the protein enters the nuclei and a rapid metabolic `turnover' of the previously incorporated phosphate groups occurs. The ony 32P-labeled ...
Testicular steroid sulfatase: Substrate specificity and inhibition
(Elsevier, 1969-12)
Kinetic studies of the cleavage of dehydroepiandrosterone-sulfate (1) and androstenediol-3-sulfate by a particulate enzyme preparation from a rat testicular microsomal fraction gave Km values of 2.04 x 10-6M for DHA-S ...
Pyrimidine in aqueous media
(Elsevier, 1969-04)
The electrochemical reduction of pyrimidine in aqueous media was studied using alternating current (a.c.) polarography. Over the pH-range, 0.5-13, five moderately to highly irreversible a.c. waves were observed, which ...
Testosterone metabolism in target tissues: Hypothalamic and pituitary tissues of the adult rat and human fetus, and the immature rat epiphysis
(Elsevier, 1969-11)
Rat pituitary, hypothalamic and cerebral cortical minces are demonstrated to effect the conversion of testosterone (T) to 5[alpha]-androstan-17[beta]-o1-3-one (DHT) and [Delta]4-androstene-3,17-dione ([Delta]4A). The ...
A low-angle X-ray diffraction study of the swelling behavior of peripheral nerve myelin
(Elsevier, 1969-04-15)
The swelling behavior of peripheral nerve myelin has been studied by recording low-angle X-ray diffraction patterns of nerve after various chemical treatments. Peripheral myelin swells in distilled water, hypotonic Ringer's ...
A stereospecific 2-keto-4-hydroxyglutarate aldolase from Escherichia coli
(Elsevier, 1969-07-08)
Enzymic [omega]-oxidation: Stoichiometry of the [omega]-oxidation of fatty acids
(Elsevier, 1969-04)
The stoichiometry of the [omega]-oxidation of fatty acids catalyzed by the inducible enzyme system of Pseudomonas oleovorans was determined. Assay methods are described for the polarographic measurement of oxygen uptake ...
Phospholipid metabolism in the developing liver : I. The biosynthesis of choline glycerophosphatides by liver slices from fetal, newborn and adult rats
(Elsevier, 1969-07-29)
1. 1. The biosynthesis of choline glycerophosphatides was evaluated in fetal, neonatal and adult female rat liver. The two main pathways were assessed by studying the rates of incorporation of [Me-14C]choline and ...
Self-administration of psychoactive substances by the monkey
(Springer-Verlag, 1969-01)
A method has been developed which permits monkeys to self-administer drug solutions, at will, through indwelling intravenous catheters. Psychological dependence on the effects of a drug occurs when a naive monkey voluntarily ...