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Studien Über Enzymatische Oxynitrilbildung

Studien Über Enzymatische Oxynitrilbildung


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I. Samtliche symmetrisch -kinetischen Wirkungen, welche bei der Oxynitrilbildung einem synthetischen Enzyme zuge- schrieben worden sind, lassen sich einfach, ohne Einfiihrung be- sonderer Hypothesen, a1'l Aciditatswirkungen erklaren. Fiir diese Wirkungen wird die ahme eines synthetischen Enzymes, syn-Emulsin" oder, Oxynitrilese" folglich iiber- fliissig und hinfallig, und die betr., Enzyme" konnen aus der Reihe der enzymatischen Katalysatoren gestrichen werden. II. Gegen die Existenz einer 0: l{ynitrilase (Benzcyanase) diirften meine Versuche 14 und 15 sprechen. Der Beweis von Armstrong und Horton kann nicht als entscheidend ange- sehen werden. In welchem Grad die Oxynitrilsynthese, bezw. die Oxynitril- spaltung, wenn sie unter Einwirkung eines Emulsinpraparates verlauft, auf einen asymmetrischen, nicht enzymatischen Katalysator im Sinne Fajans' zuriickgefiihrt werden kann, und ob man ohne Annahme eines Oxynitril spaltenden (asymme- trischen) Enzyms auskommt, hoffe ich in meiner nachsten Mitteilung erlautern zu konnen. Nach trag. Nach Erledigung der 1. Korrektur ist im Januarheft 1921 des Journal Americ. Chern. Society eine Untersuchung von Krieble und Wieland: "The properties of oxynitrilase" zu meiner Kennt- nis gekommen. Die genannten Autoren sind zwar auf Grund einiger Versuche ebenfalls zur Ansicht gelangt, da.f3 die Aciditat fiir die Oxynitrilsynthese eine wesentliche Rolle spielt, haben aber trotzdem die Wirkung des Rosenthalerschen Enzympraparates nicht auf die Aciditat zuriickfiihren konnen. Blochemlsche Zeitschrift Band 118. 3 tiber die asymmetrische Wirkung des Emulsins bei der Benz- oxynitril-synthese. Von E. Nordefeldt. (Aus dem Biochemischen Laboratorium der Universitat Stockholm.) (Eingegangen am 24. April1922.) Mit 6 Abbildungen im Text. Einleitung.


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Product Details
  • ISBN-13: 9783662282120
  • Publisher: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
  • Binding: Paperback
  • Height: 234 mm
  • No of Pages: 87
  • Series Title: German
  • Weight: 186 gr
  • ISBN-10: 3662282127
  • Publisher Date: 01 Jan 1925
  • Edition: 1925 ed.
  • Language: German
  • Returnable: N
  • Spine Width: 5 mm
  • Width: 156 mm


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