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Untersuchungen am genetischen Material von Herpesviren

Studies of the genetic material of herpesviruses

II. Genetische Verwandtschaft verschiedener Herpesviren

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Summary

The DNAs of HSV-1 and HSV-2 showed about 65% base-sequence homology as measured by DNA-DNA hybridization experiments. Among the strains of HSV-1 and HSV-2, respectively, existed almost complete homology.The DNA of the Varicella-Zoster virus did not hybridize significantly with that of the herpes simplex viruses. The nucleic acids of ECE-, IBR- and Psr-virus did not share any homology extending the error of the hybridization technique. The specificity of the reaction was demonstrated by reciprocal saturation experiments or by competition hybridization and was proven by the melting of the DNA-DNA hybrid. The homology between HSV-1 and HSV-2 measured by hybridization of transcribed RNA to purified DNA did not exceed 50%. The other viruses did not show significant relatedness in their genetic material. The importance of the experimental results with regard to the biological properties as well as to the evolution of the herpesviruses is discussed.

Zusammenfassung

Die Basensequenz-Homologie für die Nucleinsäuren von HSV-1 und HSV-2 betrug etwa 65%, wie DNS-DNS Hybridisationsexperimente ergaben. Alle Stämme des HSV-1 bzw. HSV-2 waren untereinander in ihrer DNS nahezu vollkommen homolog. Zwischen V-Z-Virus und den Herpes Simplex-Viren bestand keine signifikante Übereinstimmung im genetischen Material. Die Nucleinsäuren von ECE-, IBR-, Psr-Virus wiesen ebenfalls keine Basensequenz-Homologie auf, die über die Fehlerbreite der Methode hinausging. — Die Spezifität der Reaktionen wurde durch reziproke Sättigungshybridisation oder durch Kompetitions-experimente erhärtet und mit dem Aufschmelzen des DNS-DNS Hybridmoleküls nachgewiesen.

Bei HSV-1 und HSV-2 konnte mit der DNS-RNS Hybridbildung in der transkribierten RNS eine Homologie gefunden werden, die 50% nicht überstieg. Die übrigen Viren zeigten auch mit dieser Untersuchungstechnik keine wesentliche Übereinstimmung in ihrem Genmaterial.

Die Bedeutung der experimentellen Befunde für die biologischen Besonderheiten sowie für die Evolution der Herpesviren wird diskutiert.

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Der experimentelle Teil der Arbeit wurde am Department of Virology and Epidemiology, Baylor College of Medicine, Houston (Texas), durchgeführt.

Herrn Prof. Dr. J. L. Melnick, Frau Prof. Dr. M. Benyesh-Melnick und Herrn Dr. N. Biswal bin ich für die menschliche und wissenschaftliche Unterstützung während meines Aufenthaltes (1969–1971) am Department of Virology and Epidemiology, Baylor College of Medicine, Houston, Texas, zu großem Dank verpflichtet.

Für die stete Förderung meiner Arbeiten gilt mein besonderer Dank den Herren Prof. Dr. R. Rott und Prof. Dr. C. Scholtissek.

Die Arbeit wurde aus Mitteln des “Special Virus Cancer Program of the National Cancer Institute, NIH” sowie mit einem Stipendium der Deutschen Forschungsgemeinschaft gefördert.

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Ludwig, H. Untersuchungen am genetischen Material von Herpesviren. Med Microbiol Immunol 157, 212–238 (1972). https://doi.org/10.1007/BF02121162

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