Now showing items 11-20 of 293
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% ...
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. ...
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. ...
EcoRI restriction endonuclease cleavage site map of bacteriophage P22 DNA
(Elsevier, 1978-01-25)
The seven EcoRI restriction endonuclease cleavage sites in bacteriophage P22 DNA have been mapped. The cleavage site map of circularly permuted P22 linear DNA is a circle. The positions of EcoRI sites in the early region ...
Non-visual functions of crustacean eyestalk ganglia
(Springer-Verlag, 1971-03)
Ablation experiments demonstrated that in several crustacean groups, the proximal eyestalk ganglia are important in a variety of behavior patterns: 1. Chemical elicitation of feeding via the antennules is altered in lobsters, ...
Drug inhibitable ecto-ATPase in leukocytes
(Elsevier, 1975-05-01)
In rat leukocytes, the total ATP-hydrolyzing activity was highest when determined in cells with an intact plasma membrane. The ecto-ATPase, exhibiting a Km for ATP of 0.3 mM, was inhibited 30% by sulfhydryl reagents, whereas ...
Estrogen induction of ornithine aminotransferase in rat kidney slices
(Elsevier, 1978-06-14)
Immunologic titration of kidney extracts from control and estradiol-injected rats with anti-ornithine aminotransferase serum shows that the hormone induces the enzyme by increasing its concentration in the kidney. The ...