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Author: E.J.M. Helmreich
Publisher: Springer Science & Business Media
ISBN: 3642682111
Category : Science
Languages : en
Pages : 407
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Author: E.H. Fischer
Publisher: Springer Science & Business Media
ISBN: 3642808174
Category : Science
Languages : en
Pages : 405
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The First International Symposium on the Metabolic Interconversion of Enzymes was held in Santa Margherita Ligure, Italy, in May, 1970, under the direction of Professor G. Bonsignore. Because of rapid developments in this field, a second Symposium was organized a year and a half later in Rottach-Egern, Germany (October, 1971) by Professors E. He1mreich, H. Holzer and O. Wieland. At that time, so much new information had accumulated that it was decided to repeat such conferences approx imately every other year; the United States was chosen as the next site. This publi cation reports the Proceedings of the Third International Symposium on the Metabolic Interconversion of Enzymes held at the Battelle Seattle Research Center, Seattle, Washington, June 5 - 8, 1973. The conferences were originally designed to examine the control of metabolic reactions by covalent modification of certain key enzymes. Covalent, as opposed to allosteric or metabolic, regulation had first been recognized some fifteen years be fore. Initially thought to represent an added sophistication in regulatory processes possibly reserved to higher organisms, covalent regulation has now been found in both prokaryotes and eukaryotes. Those early studies in covalent modification revealed for the first time the existence of special "converter" enzymes whose purpose in life is to switch other molecules from one state of activity to another.
Author: S. Shaltiel
Publisher: Springer Science & Business Media
ISBN: 364266461X
Category : Science
Languages : en
Pages : 254
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Author: Gesellschaft Deutscher Naturforscher und Ärzte
Publisher: Springer
ISBN:
Category : Medical
Languages : de
Pages : 480
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The rapid development and recent advances in this field seemed to justify a further meeting dealing primarily with protein interconversions and their biological significance rather soon after the first symposium of this kind, held under the direction of Professor G. BONSIGNORE of Genoa, in Santa Margherita Ligure, Italy, in May 1970. The proceedings of the Second International Symposium on Metabolic Interconversion of Enzymes, held in Rottach-Egern, in the Bavarian Alps, from October 27-30, 1971, under the auspices of the "Gesellschaft Deutscher N aturforscher und Arzte" bear witness to the high quality of the research reports and the lively discussions which ensued. There are contributions by a number of distinguished scientists and experts in the field who came from several European countries, Canada, Israel, Japan, the Soviet Union and the United States in order to participate in this symposium. We wish to express our sincere gratitude to the speakers for all their efforts. The main burden of the editorial work was carried by Dr. G. LOFFLER, Munich, ably as Dr. A. R. FERGUSON, Freiburg, Dr. R. H. HASCHKE, Wiirzburg, Dr. A. HASILlK, sisted by Freiburg, Dr. L. HEILMEYER Jr. , Wiirzburg, Dr. E. SIESS, Munich, and by the secretaries, Miss E. BAUER, Munich and Mrs. G. WEIDEMANN, Wiirzburg. To the publishers, Springer Verlag Berlin Heidelberg New York, and especially to Dr. H. MAYER-KAUPP, we are greatly indebted for their cooperation.
Author: Gesellschaft Deutscher Naturforscher und Arzte
Publisher: Springer-Verlag
ISBN: 366237966X
Category : Science
Languages : de
Pages : 444
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Author: E.J.M. Helmreich
Publisher: Springer
ISBN: 9783540109792
Category : Science
Languages : en
Pages : 584
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Previous symposia on Metabolic Interconversion of Enzymes were held in 1970 (Santa Margherita-Ligure, Italy), 1971 (Rottach-Egern, Ger many), 1973 (Seattle, USA) and 1975 (Arad, Israel). The present pub lication reports the proceedings of the 5th International Symposium on Metabolic Interconversion of Enzymes, held in Titisee/Black Forest (Germany) from October 1st-5th, 1980. In the last few years, the number of enzymes for which control of activity by enzyme-catalyzed covalent modification, i.e., by intercon version, is of recognized metabolic importance has increased so much that is was not possible to have every such enzyme considered during a 3-day conference. The organizers therefore decided to devote only one of the three sections to "metabolic interconversion" per se, and to cover in the other two sections "enzyme regulation by proteolytic modification" and "novel aspects of regulation". According to the IUP AC-IUB Commission on Biochemical Nomenclature (cf. J. Biol. Chem. 252,5939-5941 (1977)), modification by proteolysis is not in cluded in "metabolic interconversion". Considering, however, the close interrelationship of these two types of enzyme control, it has become a tradition, beginning with the conference in Rottach-Egern 1971, to include proteolytic modification in our conferences.
Author: S. Shaltiel
Publisher: Springer
ISBN: 9783540078883
Category : Science
Languages : en
Pages : 266
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Three parameters participating in the specific control of proteolytic processes in intact yeast cells are discussed: (1) different substrate specificity of the yeast proteinases A and B, and carboxypeptidase Y when tested with yeast enzymes as substrate, (2) three types of macro molecular inhibitors from yeast specifically inhibiting the three pro teinases, (3) subcellular localization of the proteinases in the vacu oles and of the inhibitors in the cytosol. Mechanisms of a selective proteolysis of single enzymes or a group of enzymes dependent on chan ges in the physiological conditions are discussed. References Betz, H., Hinze, H., Holzer, H.: Isolation and properties of two inhibitors of proteinase B from yeast. J. Bioi. Chem. 249, 4515-4521 (1974) Cabib, E., Farkas, V.: The control of morphogenesis: An enzymatic mechanism for the initiation of septum formation in yeast. Proc. Nat. Acad. Sci. U.S. 68, 2052-2056 (1971) Cabib, E., Keller, F.A.: Chitin and yeast budding. J. Bioi. Chem. 246, 167-173 (1971) Cabib, E., Ulane, R.: Chitin synthetase activating factor from yeast, a protease. Biochem. Biophys. Res. Commun. 50, 186-191 (1973) Hasilik, A.: Inactivation of Chitin Synthase in Saccharomyces cerevisiae. Arch. Microbiol. 101, 295-301 (1974) Hasilik, A., Holzer,~: PartiCipation of the tryptophan synthase inactivating system from yeast in the activation of chitin synthase. Biochem. Biophys. Res.
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Languages : en
Pages : 397
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