Whole-genome landscape of histone H2AX and M-NM-3-H2AX

ABSTRACT: Phosphorylation of the histone variant H2AX forms M-NM-3-H2AX that marks DNA double-strand break (DSB). Here we generated the sequencing-based maps of H2AX and M-NM-3-H2AX positioning in resting and proliferating cells before and after ionizing irradiation. Genome-wide locations of possible endogenous and exogenous DSBs were identified based on M-NM-3-H2AX distribution in dividing cancer cells without irradiation and that in resting cells upon irradiation, respectively. M-NM-3-H2AX-enriched regions of endogenous origin in replicating cells included telomeres and active transcription start sites, apparently reflecting replication- and transcription-mediated stress during rapid cell division. Surprisingly, H2AX itself, prior to phosphorylation, was specifically located at these endogenou

ORGANISM(S): Homo sapiens

SUBMITTER: Jung Kyoon Choi 

PROVIDER: E-GEOD-25577 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress