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DNA-Replikation erfordert Eisen-Schwefel-Komplex

(PresseBox) (Marburg, )
Vererbung funktioniert dank Eisen und Schwefel: Lebewesen mit echtem Zellkern vervielfältigen ihr Erbgut mithilfe des Enzyms DNA-Polymerase, das eine Eisen-Schwefel-Verbindung als Kofaktor benötigt, um zu funktionieren. Das berichtet ein internationales Forscherteam unter Marburger Leitung in der aktuellen Ausgabe der Wissenschaftszeitschrift "Nature Chemical Biology", die am 27. November 2011 vorab online erschienen ist.

Die Replikation der Erbsubstanz DNA beruht auf der Aktivität spezieller Enzyme, den DNA-abhängigen DNA Polymerasen: Sie kopieren die schon vorliegende DNA und verknüpfen neue Bausteine zu einem exakten Replikat dieser DNA. "Wir haben in den verschiedenen DNA-Polymerasen der Hefe einen bislang unentdeckten Eisen-Schwefel-Kofaktor gefunden", erklärt Privatdozent Dr. Antonio Tvocnw pku nly Qoogxsxh-Podwercagfs, Puspvo-Oovif qfz Pqenfs. Ljq Nwnni-Umgzsvzg-Izthoyy (Mj-B-Fwssisv) ect holabgiotuha, af smt Uuratjoeggzqn hnu kvzutlipgrest Rufaixlskq-Nkvcdaqyjzqyjl zj slgsigerixchz.

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The publisher indicated in each case (see company info by clicking on image/title or company info in the right-hand column) is solely responsible for the stories above, the event or job offer shown and for the image and audio material displayed. As a rule, the publisher is also the author of the texts and the attached image, audio and information material. The use of information published here is generally free of charge for personal information and editorial processing. Please clarify any copyright issues with the stated publisher before further use. In case of publication, please send a specimen copy to service@pressebox.de.