Genome-wide mapping of early replication fragile sites (ERFS)
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DNA double strand breaks (DSBs) in B lymphocytes are thought to arise stochastically during replication (S phase) or as a result of targeted DNA damage by activation induced cytidine deaminase (AID) in G1. Here we identify a novel class of recurrent, early replicating and AID independent DNA lesions, termed early replication fragile sites (ERFS), by genome-wide localization of DNA repair proteins DNA double strand breaks (DSBs) in B lymphocytes are thought to arise stochastically during replication (S phase) or as a result of targeted DNA damage by activation induced cytidine deaminase (AID) in G1. Here we identify a novel class of recurrent, early replicating and AID independent DNA lesions, termed early replication fragile sites (ERFS), by genome-wide localization of DNA repair proteins DNA double strand breaks (DSBs) in B lymphocytes are thought to arise stochastically during replication (S phase) or as a result of targeted DNA damage by activation induced cytidine deaminase (AID) in G1. Here we identify a novel class of recurrent, early replicating and AID independent DNA lesions, termed early replication fragile sites (ERFS), by genome-wide localization of DNA repair proteins RPA, SMC5, gamma-H2AX, and BRCA1 in B cells subjected to replication stress.
