Abstract
1. α-Amanitin inhibits in vitro the RNA polymerase solubilized from isolated rat liver nuclei. 2. In contrast with previous observations with whole nuclei, the inhibition occurs approximately to the same extent in the presence and in the absence of ammonium sulphate. 3. Evidence is presented that the toxin acts by interacting with the enzyme itself and not with DNA or other components.
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- Fiume L., Laschi R. Lesioni ultrastrutturali prodotte nelle cellule parenchimali epatiche dalla falloidina e dalla alpha-amanitina. Sperimentale. 1965 Sep-Oct;115(5):288–297. [PubMed] [Google Scholar]
- Fiume L., Stirpe F. Decreased RNA content in mouse liver nuclei after intoxication with alpha-amanitin. Biochim Biophys Acta. 1966 Sep;123(3):643–645. doi: 10.1016/0005-2787(66)90239-5. [DOI] [PubMed] [Google Scholar]
- Jacob S. T., Sajdel E. M., Munro H. N. Altered characteristics of mammalian RNA polymerase following solubilization from nuclei. Biochem Biophys Res Commun. 1968 Sep 6;32(5):831–838. doi: 10.1016/0006-291x(68)90316-1. [DOI] [PubMed] [Google Scholar]
- Kersten W., Kersten H., Szybalski W. Physicochemical properties of complexes between deoxyribonucleic acid and antibiotics which affect ribonucleic acid synthesis (actinomycin, daunomycin, cinerubin, nogalamycin, chormomycin, mithramycin, and olivomycin). Biochemistry. 1966 Jan;5(1):236–244. doi: 10.1021/bi00865a031. [DOI] [PubMed] [Google Scholar]
- Novello F., Stirpe F. Experimental conditions affecting ribonucleic acid polymerase in isolated rat liver nuclei. Effect of nucleoside triphosphate concentration, temperature, ammonium sulphate and heparin. Biochem J. 1969 May;112(5):721–727. doi: 10.1042/bj1120721. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Reich E., Goldberg I. H. Actinomycin and nucleic acid function. Prog Nucleic Acid Res Mol Biol. 1964;3:183–234. doi: 10.1016/s0079-6603(08)60742-4. [DOI] [PubMed] [Google Scholar]
- Sippel A., Hartmann G. Mode of action of rafamycin on the RNA polymerase reaction. Biochim Biophys Acta. 1968 Mar 18;157(1):218–219. doi: 10.1016/0005-2787(68)90286-4. [DOI] [PubMed] [Google Scholar]
- Sporn M. B., Dingman C. W., Phelps H. L., Wogan G. N. Aflatoxin B1: binding to DNA in vitro and alteration of RNA metabolism in vivo. Science. 1966 Mar 25;151(3717):1539–1541. doi: 10.1126/science.151.3717.1539. [DOI] [PubMed] [Google Scholar]
- Stirpe F., Fiume L. Studies on the pathogenesis of liver necrosis by alpha-amanitin. Effect of alpha-amanitin on ribonucleic acid synthesis and on ribonucleic acid polymerase in mouse liver nuclei. Biochem J. 1967 Nov;105(2):779–782. doi: 10.1042/bj1050779. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wehrli W., Knüsel F., Schmid K., Staehelin M. Interaction of rifamycin with bacterial RNA polymerase. Proc Natl Acad Sci U S A. 1968 Oct;61(2):667–673. doi: 10.1073/pnas.61.2.667. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Widnell C. C., Tata J. R. Studies on the stimulation by ammonium sulphate of the DNA-dependent RNA polymerase of isolated rat-liver nuclei. Biochim Biophys Acta. 1966 Sep;123(3):478–492. doi: 10.1016/0005-2787(66)90216-4. [DOI] [PubMed] [Google Scholar]
- Wieland T. Poisonous principles of mushrooms of the genus Amanita. Four-carbon amines acting on the central nervous system and cell-destroying cyclic peptides are produced. Science. 1968 Mar 1;159(3818):946–952. doi: 10.1126/science.159.3818.946. [DOI] [PubMed] [Google Scholar]