DE928401C - Process for the pure preparation of Cozymase - Google Patents

Process for the pure preparation of Cozymase

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Publication number
DE928401C
DE928401C DEB21476A DEB0021476A DE928401C DE 928401 C DE928401 C DE 928401C DE B21476 A DEB21476 A DE B21476A DE B0021476 A DEB0021476 A DE B0021476A DE 928401 C DE928401 C DE 928401C
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DE
Germany
Prior art keywords
cozymase
salts
pure preparation
dpn
nucleotide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEB21476A
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German (de)
Inventor
Walter Christian
Kurt Dr Wallenfels
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roche Diagnostics GmbH
Original Assignee
Boehringer Mannheim GmbH
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Publication date
Application filed by Boehringer Mannheim GmbH filed Critical Boehringer Mannheim GmbH
Priority to DEB21476A priority Critical patent/DE928401C/en
Application granted granted Critical
Publication of DE928401C publication Critical patent/DE928401C/en
Expired legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P19/00Preparation of compounds containing saccharide radicals
    • C12P19/26Preparation of nitrogen-containing carbohydrates
    • C12P19/28N-glycosides
    • C12P19/30Nucleotides
    • C12P19/36Dinucleotides, e.g. nicotineamide-adenine dinucleotide phosphate

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  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Zoology (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Molecular Biology (AREA)
  • Biochemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Description

Verfahren zur Reindarstellung von Cozymase Hinsichtlich der Gewinnung von Cozymase (Diphosphopyridinnucleotid) sind in neuerer Zeit verschiedene Vorschläge zur Verbesserung der bis dahin üblichen Verfahren (vgl. »Biochemical Preparations«, Vol. I, S. 28, 1949) gemacht worden. Durch Anwendung moderner Methoden, wie die der Gegenstromverteilung und des Ionenaustausches, ist es gelungen, wesentliche Vereinfachungen bezüglich der technischen Darstellung .dieses immer wichtiger werdenden enzymatischen Wirkstoffes zu erzielen (vgl. unter anderem Ne i 1 a n d s und Akeson in.»The Journal of Biological Chemistry«, Vol. 188, S. 307, 195z). Die Patentschrift 913 4o6 beschreibt ein Verfahren, nach dem es unter stufenweiser Anwendung besonderer lonenaustauschcr erstmals möglich ist, die Cozymase in reinem Zustande zu isolieren. Allerdings hat diese Methode noch den Nachteil, daß eine restlose Erfassung des im Ausgangsmaterial enthaltenen Diphosphopyridinnucleotids (DPN) nur durch eine etwas umständliche Aufarbeitung von Fraktionen niederen Wirkstoffgehaltes möglich ist.Process for the pure preparation of Cozymase With regard to the production of Cozymase (diphosphopyridine nucleotide), various proposals have recently been made to improve the previously customary processes (cf. "Biochemical Preparations", Vol. I, p. 28, 1949). By using modern methods, such as countercurrent distribution and ion exchange, it has been possible to achieve significant simplifications with regard to the technical representation of this enzymatic active ingredient, which is becoming more and more important (see, among others, Ne i 1 ands and Akeson in "The Journal of Biological Chemistry ", Vol. 188, pp. 307, 195z). Patent specification 913 406 describes a process according to which it is possible for the first time to isolate the cozymase in a pure state with the gradual application of special ion exchangers. However, this method still has the disadvantage that a complete detection of the diphosphopyridine nucleotide (DPN) contained in the starting material is only possible through a somewhat laborious work-up of fractions with a low active ingredient content.

Der Gegenstand der Erfindung ist nun ein Verfahren, mit dessen Hilfe es gelingt, die in dem betreffenden Ausgangsmaterial enthaltene Cozymase nahezu quantitativ in einfacher Weise, gewissermaßen in einem Arbeitsgang, zu isolieren. Wie nämlich gefunden wurde, bildet die Cozymase mit Basen von Chinaalkaloiden gut kristallisierende Salze, die auf Grund ihrer Löslichkeitseigenschaften leicht abgetrennt und gegebenenfalls umkristallisiert werden können. Die Salze lassen sich in üblicher Weise in ihre Komponenten spalten, und nach Abtrennung der Base erhält man aus ihnen das DPN in reiner Form.The object of the invention is now a method with the help of which the cozymase contained in the starting material in question succeeds almost to isolate quantitatively in a simple manner, as it were in one operation. Namely, as has been found, the cozymase forms well with bases of china alkaloids crystallizing salts which are easily separated due to their solubility properties and can optionally be recrystallized. The salts can be used in usual Way into their components, and after separation of the base one obtains from them the DPN in its pure form.

Als zweckmäßig hat sich für die Zerlegung der Salze und Abtrennung des freien Nucleotids auch hier wieder die Methode des Ionenaustausches erwiesen. Schickt man die wäßrige Salzlösung durch eine Säule eines schwach basischen Austauschers, z. B. basische Ionenaustauscher auf Kunstharzbasis in ihrer Acetatform, so erfolgt unter Zerlegung der Salze einAustausch des DPN gegen dieAcetationen, während das Acetat des betreffenden Alkaloids die Säule passiert. Anschließend läßt sich das DPN in Gegenwart einer geeigneten stärkeren Säure glatt und quantitativ eluieren und durch Zusatz eines organischen Lösungsmittels, in welchem es unlöslich ist, aus dem Eluat ausfällen.It has been found to be useful for the decomposition of the salts and separation of the free nucleotide here, too, the method of ion exchange has again been demonstrated. Sends the aqueous salt solution through a column of a weakly basic exchanger, z. B. basic ion exchangers based on synthetic resin in their acetate form, so takes place with decomposition of the salts, an exchange of the DPN for the acetations, while the Acetate of the alkaloid in question passed the column. Then you can Elute DPN smoothly and quantitatively in the presence of a suitable stronger acid and by adding an organic solvent in which it is insoluble, precipitate from the eluate.

Man kann die erfindungsgemäß vorzunehmende Isolierung des Diphosphopyridinnucleotids als Salz eines Chinaalkaloids aber auch durch doppelte Umsetzung geeigneter Salzpaare bewirken. So können Lösungen, in denen das DPN in Anwendung der üblichen Methode als Ba-Salz angereichert vorliegt, mit ausreichenden Mengen von z. B. Chininsulfat versetzt werden, worauf nach Abtrennung des Bariumsulfats eine Ausfällung der Nucleotid-Chinin-Verbindung durch Zugabe von z. B. Benzol erfolgen kann. Eine derartige doppelte Umsetzung kann natürlich auch unter Anwendung von geeigneten Ionenaustauschern vorgenommen werden. Beispiel 2 g eines Blut- oder Hefekonzentrats, in welchem das Diphosphopyridinnucleotid unter Anwendung bekannter Methoden zu 75 % angereichert ist, werden in 20 ccm Wasser gelöst; falls die Lösung getrübt bleibt, wird zentrifugiert. Man fügt nun eine Lösung von 2,2 g Chininbase in 17 ccm Alkohol hinzu, und unter kräftigem Schütteln der Mischung wird so lange eine 3oo/oige Lösung von absolutem Alkohol in Benzol zugegeben, bis alles klar gelöst ist. Man läßt die Lösung (etwa 400 ccm) bei Zimmertemperatur zum Kristallisieren stehen; nach etwa 40 Stunden ist die Kristallisation beendet. Die Kristalle werden abzentrifugiert, mit einer Alkohol-Benzol-Mischung gewaschen und im Vakuum getrocknet. Ausbeute an. Chininsalz 2,2 g.The isolation of the diphosphopyridine nucleotide as a salt of a quina alkaloid, which is to be carried out according to the invention, can also be brought about by double conversion of suitable salt pairs. For example, solutions in which the DPN is enriched as a Ba salt using the usual method can be mixed with sufficient amounts of z. B. quinine sulfate are added, whereupon after separation of the barium sulfate a precipitation of the nucleotide quinine compound by adding z. B. benzene can be done. Such a double conversion can of course also be carried out using suitable ion exchangers. Example 2 g of a blood or yeast concentrate in which the diphosphopyridine nucleotide is enriched to 75% using known methods are dissolved in 20 cc of water; if the solution remains cloudy, it is centrifuged. If one adds a solution of 2.2 g quinine in 1 7 cc of alcohol added, and a 3oo / o solution is added as long of absolute alcohol in benzene with vigorous shaking of the mixture is a clear solution to everything. The solution (about 400 ccm) is allowed to stand at room temperature to crystallize; after about 40 hours, the crystallization is complete. The crystals are centrifuged off, washed with an alcohol-benzene mixture and dried in vacuo. Yield to. Quinine salt 2.2 g.

Zur Freilegung des DPN löst man 4oo mg Chininsalz in 2o ccm ro n-Essigsäure. Die Lösung wird durch eine Säule von ro ccm eines basischen Ionenaustaus,chers auf Kurnstharzbmis in seiner Acetatform geschickt, wobei das Chininsalz unter Zurückhaltung der Nucleotidkomponente gespalten wird; es wird bis" zur Chininfreiheit nachgewaschen. Nun wird die Säule so lange mit etwa 8,5°/aiger Ameisensäure durchspült, bis in einer Probe des Eluates kein DPN mehr nachweisbar ist. Aus den gegebenenfalls eingeengten Eluaten wird der Wirkstoff durch Zugabe von Aceton ausgefällt. Man erhält nach dem Trocknen 240 mg freies Diphosphopyrindinnucleotid.To expose the DPN, 400 mg of quinine salt is dissolved in 20 cc of ro n-acetic acid. The solution is passed through a 3 cc column of basic ion exchange Kurnstharzbmis sent in its acetate form, the quinine salt with reluctance the nucleotide component is cleaved; it is washed until it is "quinine-free". Now the column is rinsed with about 8.5% formic acid until in DPN is no longer detectable in a sample of the eluate. From the possibly narrowed The active ingredient is precipitated in the eluate by adding acetone. After the Dry 240 mg of free diphosphopyrindine nucleotide.

Claims (2)

PATENTANSPRÜCHE: r. Verfahren zur Reindarstellung von Cozymase, dadurch gekennzeichnet, daß man sie aus ihren Lösungen über ihre Salze mit Chinaalkaloiden abtrennt, worauf die gewonnenen Salze in ihre Komponenten zerlegt werden. PATENT CLAIMS: r. Process for the pure preparation of Cozymase, characterized in that they are separated from their solutions via their salts with china alkaloids, whereupon the salts obtained are broken down into their components. 2. Verfahren gemäß Anspruch z, dadurch gekennzeichnet, daß die Zerlegung der Salze unter Verwendung von geeigneten Ionenaustauschern vorgenommen wird.2. Procedure according to claim z, characterized in that the decomposition of the salts using is carried out by suitable ion exchangers.
DEB21476A 1952-08-05 1952-08-05 Process for the pure preparation of Cozymase Expired DE928401C (en)

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DEB21476A DE928401C (en) 1952-08-05 1952-08-05 Process for the pure preparation of Cozymase

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DEB21476A DE928401C (en) 1952-08-05 1952-08-05 Process for the pure preparation of Cozymase

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1036192B (en) * 1955-02-23 1958-08-14 Nagase & Co Ltd Process for purifying proteases

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1036192B (en) * 1955-02-23 1958-08-14 Nagase & Co Ltd Process for purifying proteases

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