Requirement of ATM-Dependent Monoubiquitylation of Histone H2B for Timely Repair of DNA Double-Strand Breaks

Lilach Moyal, Yaniv Lerenthal, Mali Gana-Weisz, Gilad Mass, Sairei So, Shih Ya Wang, Berina Eppink, Young Min Chung, Gil Shalev, Efrat Shema, Dganit Shkedy, Nechama I. Smorodinsky, Nicole van Vliet, Bernhard Kuster, Matthias Mann, Aaron Ciechanover, Jochen Dahm-Daphi, Roland Kanaar, Mickey C.T. Hu, David J. ChenMoshe Oren, Yosef Shiloh

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

The cellular response to DNA double-strand breaks (DSBs) is mobilized by the protein kinase ATM, which phosphorylates key players in the DNA damage response (DDR) network. A major question is how ATM controls DSB repair. Optimal repair requires chromatin relaxation at damaged sites. Chromatin reorganization is coupled to dynamic alterations in histone posttranslational modifications. Here, we show that in human cells, DSBs induce monoubiquitylation of histone H2B, a modification that is associated in undamaged cells with transcription elongation. We find that this process relies on recruitment to DSB sites and ATM-dependent phosphorylation of the responsible E3 ubiquitin ligase: the RNF20-RNF40 heterodimer. H2B monoubiquitylation is required for timely recruitment of players in the two major DSB repair pathways-nonhomologous end-joining and homologous recombination repair-and optimal repair via both pathways. Our data and previous data suggest a two-stage model for chromatin decondensation that facilitates DSB repair.

اللغة الأصليةالإنجليزيّة
الصفحات (من إلى)529-542
عدد الصفحات14
دوريةMolecular Cell
مستوى الصوت41
رقم الإصدار5
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 4 مارس 2011

All Science Journal Classification (ASJC) codes

  • !!Molecular Biology
  • !!Cell Biology

بصمة

أدرس بدقة موضوعات البحث “Requirement of ATM-Dependent Monoubiquitylation of Histone H2B for Timely Repair of DNA Double-Strand Breaks'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا