Now showing items 31-40 of 443
Role of isosafrole as complexing agent and inducer of P-450LM4 in rabbit liver microsomes
(Elsevier, 1982-09-16)
Isosafrole serves as an excellent inducing agent in rabbits for P-450LM4, the same isozyme as that which is induced by 3-methylcholanthrene and 5,6-benzoflavone. Since the isosafrole adduct formed with isozyme 4 is unstable, ...
Immunological comparison of the usual and atypical human serum cholinesterase phenotypes
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1983-02)
Antiserum prepared against highly purified usual human serum cholinesterase (the most common phenotype) cross-reacted identically with the atypical serum cholinesterase. The level of circulating atypical enzyme protein, ...
Solubilization of hen brain neurotoxic esterase in dimethylsulfoxide
(Elsevier, 1985-10-15)
Neurotoxic esterase is the putative site of initiation of organophosphorus-induced neuropathy. The protein is membrane-associated and will thus require solubilization before it can be purified. Its enzymic activity was ...
Michael addition of thiols with 4-methyleneglutamic acid: Preparation of adducts, their properties and presence in peanuts
(Elsevier, 1982-04-29)
The thioethers, S-(4-amino-2,4-dicarboxybutyl)cysteamine, S-(4-amino-2,4-dicarboxybutyl)cysteine and S-(4-amino-2,4-dicarboxybutyl)glutathione, were synthesized by a Michael addition between 4-methyleneglutamic acid and ...
Characterization of a topoisomerase-like activity at specific hypersensitive sites in the Drosophila histone gene cluster
(Elsevier, 1989-07-14)
It is well known that treatment of DNA-topoisomerase complexes with SDS induces cleavage of the DNA by trapping a reactive intermediate in which the topoisomerase is covalently linked to the terminal phosphates of the cut ...
Teratogenic action of platinum thymine blue
(Elsevier, 1982-08-23)
The teratogenic activity of the antitumor agent cisplatinum-2-thymine (platinum thymine blue) was investigated in rats. Pregnant Wistar-derived albino rats were given single ip injections of an aqueous solution of platinum ...
Optimal activity times and habitat choice of moose
(Springer-Verlag, 1981-02)
A set of concepts was presented which could be used to model an animal's activity cycle and habitat choice as an optimization process. The model was applied to moose ( Alces alces ) summer activity and its predictions were ...
Isolation of an acid protease from rabbit reticulocytes and evidence for its role in processing redox proteins during erythroid maturation
(Elsevier, 1981-06-30)
A protease which generates a soluble hemepeptide from bovine liver microsomal cytochrome has been isolated from the membrane fraction of rabbit reticulocytes. Inhibition by pepstatin and an acidic pH optimum indicate that ...
Data subset selection by Boolean calculation
(Elsevier, 1984-11)
In this journal in 1969 the authors described an unconventional method, based on concepts from systematic biology, for storing and retrieving data, whose salient features are: (1) data are stored in such a manner that the ...
Monovalent cations (Na+, K+, Cs+) inhibit calcium activation of photosynthetic oxygen evolution
(Elsevier, 1989-02-13)
In the absence of the 17 and 23 kDa water-soluble polypeptides, the oxygen-evolving complex of photosystem II requires addition of Cl- and Ca2+ to maximize rates of oxygen evolution activity. We have found that monovalent ...