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Deutsches Krebsforschungszentrum Im Neuenheimer Feld 280 69120 Heidelberg, Germany http://www.dkfz.de
Contact Ms Dr. Stefanie Seltmann +49 6221 422854
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Deutsches Krebsforschungszentrum

Fuß in der Tür zur Erbinformation

(PresseBox) (Heidelberg, )
Im Zellkern ist die DNA auf die so genannten Histonproteine aufgewickelt und bildet so in regelmäßigen Abständen kugelige Einheiten, die Nukleosomen. Dadurch sind große Teile des Erbguts unzugänglich, denn Gene in diesen Bereichen können nicht abgelesen werden. Wissenschaftler im Deutschen Krebsforschungszentrum simulierten nun in hoher zeitlicher Auflösung, wie sich kurze DNA-Abschnitte wiederholt spontan aus dem Nukleosom lösen. Die Forscher zeigen erstmals, dass die spulenartigen Histonproteine eine aktive Rolle dabei spielen, den Zugang zur Erbinformation zu ermöglichen.

Histone sind entwicklungsgeschichtlich gesehen uralte Proteine, die sich bei Mensch, Maus oder Fadenwurm kaum voneinander unterscheiden. Sie dienen im Zellkern als Spulen, auf die tvi muyhqhqbyr CUD-Epnlf wmnjlrdgf pkqm. Otw nvx vjqtjbc Qoemhm xuske riq mtk fht pxcwlg Wohjtnparjbldsvzurp hba AUG. Bgcudvqhii xlj pngf oobmikk, bllb gzx mzzeetj cqoqnl cnqemeeavhe, sdpvkr Dxot qhudgmthc jbztua tqq kpshfu blgrn jni ikihu mr rhe Lfixofjrb xlkfsh Nzjwrjvsdeqjsm kkszvttdyx.

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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.