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Updated: Jul 28, 2026

Visualization of DNA Repair Proteins Interaction by Immunofluorescence
Published on: June 26, 2020
RAD51-independent break-induced replication to repair a broken chromosome depends on a distant enhancer site
A Malkova1, L Signon, C B Schaefer
1Rosenstiel Center and Department of Biology, Brandeis University, Waltham, Massachusetts 02254-9110, USA.
Abstract:
Without the RAD51 strand exchange protein, Saccharomyces cerevisiae cannot repair a double-strand break (DSB) by gene conversion. However, cells can repair DSBs by recombination-dependent, break-induced replication (BIR). RAD51-independent BIR is initiated more than 13 kb from the DSB. Repair depends on a 200-bp sequence adjacent to ARS310, located approximately 34 kb centromere-proximal to the DSB, but does not depend on the origin activity of ARS310. We conclude that the ability of a recombination-induced replication fork to copy > 130 kb to the end of the chromosome depends on a special site that enhances assembly of a processive repair replication fork.
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