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. 2015 Nov 28;44(2):538–544. doi: 10.1093/nar/gkv1312

Figure 1.

Figure 1.

Models of rRNA silencing after DSBs. (A) DSBs in rDNA silence rRNA transcription locally and induce nucleolar segregation and cap formation in an ATM-dependent manner. In nucleolar caps rDNA associate with NHEJ and HDR factors in a cell cycle independent manner. (B) DSBs in non-nucleolar DNA induce ATM-dependent translocation of NBS1-TCOF1 into nucleoli and global silencing of rRNA transcription.