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  RAD6-dependent DNA repair is linked to modification of PCNA by ubiquitin and SUMO

Hoege, C., Pfander, B., Moldovan, G. L., Pyrowolakis, G., & Jentsch, S. (2002). RAD6-dependent DNA repair is linked to modification of PCNA by ubiquitin and SUMO. Nature, 419(6903), 135-141.

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Genre: Zeitschriftenartikel
Alternativer Titel : Nature

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Hoege, C.1, Autor           
Pfander, B.2, Autor           
Moldovan, G. L.1, Autor           
Pyrowolakis, G.1, Autor           
Jentsch, S.1, Autor           
Affiliations:
1Jentsch, Stefan / Molecular Cell Biology, Max Planck Institute of Biochemistry, Max Planck Society, ou_1565156              
2Pfander, Boris / DNA Replication and Genome Integrity, Max Planck Institute of Biochemistry, Max Planck Society, ou_1565165              

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 Zusammenfassung: The RAD6 pathway is central to post-replicative DNA repair in eukaryotic cells; however, the machinery and its regulation remain poorly understood. Two principal elements of this pathway are the ubiquitin-conjugating enzymes RAD6 and the MMS2-UBC13 heterodimer, which are recruited to chromatin by the RING-finger proteins RAD18 and RAD5, respectively. Here we show that UBC9, a small ubiquitin-related modifier (SUMO)- conjugating enzyme, is also affiliated with this pathway and that proliferating cell nuclear antigen (PCNA)-a DNA-polymerase sliding clamp involved in DNA synthesis and repair-is a substrate. PCNA is monoubiquitinated through RAD6 and RAD18, modified by lysine-63-linked multi-ubiquitination-which additionally requires MMS2, UBC13 and RAD5-and is conjugated to SUMO by UBC9. All three modifications affect the same lysine residue of PCNA, suggesting that they label PCNA for alternative functions. We demonstrate that these modifications differentially affect resistance to DNA damage, and that damage-induced PCNA ubiquitination is elementary for DNA repair and occurs at the same conserved residue in yeast and humans.

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Sprache(n): eng - English
 Datum: 2002-09-12
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: eDoc: 41639
ISI: 000177931200033
 Art des Abschluß: -

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Titel: Nature
  Alternativer Titel : Nature
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 419 (6903) Artikelnummer: - Start- / Endseite: 135 - 141 Identifikator: ISSN: 0028-0836