Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Leiv Klungsøyr"'
Publikováno v:
Pharmacology & Toxicology. 77:57-64
The distribution of the food carcinogen 2-amino-3,8-dimethyl-imidazo[4,5-f]quinoxaline (MelQx) was studied in Ah-responsive-(C57BL/6J) and Ah-non-responsive mice (DBA/2N). The time dependent organ distribution of radioactivity after 14 C-NteIQx (10 m
Publikováno v:
Mutation Research/Genetic Toxicology. 319:273-278
The mutagenic activities of three isomers of IQ, with the pyridine N-atom at different positions, were measured in the Ames test with Salmonella typhimurium TA98 and enzymatic activation (S9). All test compounds showed lower activities than IQ. Inter
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 50:988-995
Particulate preparations from freshwater rainbow trout (Oncorhynchus mykiss) gill homogenates contain an active magnesium ion activated ATPase that transports protons into the vesicles. Oligomycin at a concentration of 20 μg∙mL−1had little effec
Publikováno v:
Mutation Research/Genetic Toxicology. 298:207-214
The mutagenic activity of 15 different mono-, di-, tri-, and tetramethyl derivatives of the food mutagen IQx (2-amino-3-methylimidazo[4,5-f]quinoxaline), one diphenyl derivative of IQx and two phenyl derivatives of 5-MeIQx (2-amino-3,5-dimethylimidaz
Autor:
Kjell A. Moen, Leiv Klungsøyr
Publikováno v:
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry. 68:461-466
1. 1. Rainbow trout hind parts were cannulated and perfused with oxygenated salts- dextran-solutions containing 14C-labelled substrates. 2. 2. Glucose, acetoacetic acid and 3-hydroxy butyric acid were more rapidly converted to CO2 than the amino acid
Autor:
Leiv Klungsøyr, Jan Thomassen
Publikováno v:
Biochimica et Biophysica Acta (BBA) - Bioenergetics. 723:114-122
(1) Mitochondrial ATPase (F1) is influenced by specific nucleotides in its kinetic behavior towards its substrates. In this work, initial hydrolysis rates, as well as continuous reaction progress, were measured by recording proton production (equival
Autor:
Torbjørn Dall-Larsen, Leiv Klungsøyr
Publikováno v:
European Journal of Biochemistry. 69:195-201
Ligand binding by adenosine-triphosphate phosphoribosyltransferase was studied by different methods. 200000 daltons of enzyme bound approximately 3 molecules of histidine cooperatively with a Hill plot slope of 1.23 (half-maximal binding at 520 muM).
Autor:
Karen B. Helle, Leiv Klungsøyr
Publikováno v:
Biochimica et Biophysica Acta. 65:461-471
1. 1. Centrifuged cell-free extracts and intact cells of Escherichia coli were incubated in presence of glucose and 32Pi under both aerobic and anaerobic c onditions. 2. 2. Radioactively labelled mannitol 1-phosphate and various sugar phosphates were
Autor:
Leiv Klungsøyr
Publikováno v:
Biochimica et Biophysica Acta (BBA) - Enzymology. 146:10-17
The binding of adenine nucleotide to mannitol-1-phosphate dehydrogenase ( d -mannitol-1-phosphate:NAD+ oxidoreductase EC 1.1.1.17) from Escherichia coli was studied with kinetic methods. 1. 1.|When the enzyme catalyzes the reaction between Fru-6-P an
Autor:
Einar Stenhagen, R. Sömme, I. Smith-Kielland, H. Palmstierna, Leiv Klungsøyr, Klas-Bertil Augustinsson
Publikováno v:
Acta Chemica Scandinavica. 13:571-592