Now showing items 11-20 of 330
Acetylcholine stimulates hydrolysis of 32P-labeled phosphatidic acid in guinea pig synaptosomes
(Elsevier, 1973-02-05)
[3H]-inositol or [3H]-arachidonate was injected intracerebrally into guinea pigs. Labeled nerve endings were incubated with Ach* or CCh, both of which stimulate labeling of PhA and PhI from 32Pi by > 100% and 70% ...
Solute concentration in the kidney-- I. a model of the renal medulla and its limit cases
(Elsevier, 1976)
We develop a general model of the renal medulla that is similar in geometry to the models reported by others. Two solutes are assumed to be present, one to play the role of salt and the other that of urea and similarly ...
Properties of the genome in normal and SV-40 transformed WI-38 human diploid fibroblasts. III. Turnover of nonhistone chromosomal proteins and their phosphate groups
(Elsevier, 1975-04-01)
The turnover of nonhistone chromosomal proteins and their phosphate groups was compared in normal and in SV-40 virus transformed WI-38 human diploid fibroblasts. Cells were pulse labelled with tryptophan-3H and 32P for 30 ...
Immunological relatedness of two isozymes of 3-phosphoglycerate kinase from the mouse
(Elsevier, 1978-11-15)
Enzyme stereoselectivity: The reversible reaction catalyzed by 2-keto-4-hydroxyglutarate aldolase of Escherichia coli
(Elsevier, 1975-08-04)
SummaryThe condensation of [3-3H3]-pyruvate with glyoxylate in 3HOH to form [3-3H2]-ketohydroxyglutarate was catalyzed by ketohydroxyglutarate aldolase of Escherichia coli to study the stereochemical behavior of the enzyme. ...
A generalization of the Goldman equation, including the effect of electrogenic pumps
(Elsevier, 1971-10)
An equation similar to the Goldman equation is derived for the steady-state diffusion of univalent ions across a membrane with arbitrary potential profile and in the presence of electrogenic pumps. The presence of electrogenic ...
Principle of superposition-free memory
(Elsevier, 1977-07-21)
The requirement that memory be superposition-free imposes a restrictive condition on the structure of neural models. A simple model which satisfies this condition consists of two levels of neurons, with primary level neurons ...
Isolation of plasma membranes from bovine corpus luteum possessing adenylate cyclase, 125I-hCG binding and Na---K-ATPase activities
(Elsevier, 1974-01-23)
Plasma membranes from bovine corpora lutea have been purified by sucrose density gradient centrifugation. The purified membranes, in addition to binding 125I-hCG, also possess hCG-stimulated adenylate cyclase and Na---K-ATPase. ...