Related Experiment Video
Updated: Jul 19, 2026

Using Next Generation Sequencing to Identify Mutations Associated with Repair of a CAS9-induced Double Strand Break Near the CD4 Promoter
Published on: March 31, 2022
Conservative inheritance of newly synthesized DNA in double-strand break-induced gene conversion
Grzegorz Ira1, Dominik Satory, James E Haber
1Rosenstiel Center and Department of Biology, Brandeis University, Waltham, MA 02453-2728, USA.
Abstract:
To distinguish among possible mechanisms of repair of a double-strand break (DSB) by gene conversion in budding yeast, Saccharomyces cerevisiae, we employed isotope density transfer to analyze budding yeast mating type (MAT) gene switching in G2/M-arrested cells. Both of the newly synthesized DNA strands created during gene conversion are found at the repaired locus, leaving the donor unchanged. These results support suggestions that mitotic DSBs are primarily repaired by a synthesis-dependent strand-annealing mechanism. We also show that the proportion of crossing-over associated with DSB-induced ectopic recombination is not affected by the presence of nonhomologous sequences at one or both ends of the DSB or the presence of additional sequences that must be copied from the donor.
More Related Videos
07:55Detection of Homologous Recombination Intermediates via Proximity Ligation and Quantitative PCR in Saccharomyces cerevisiae
Published on: September 11, 2022
08:31Characterizing DNA Repair Processes at Transient and Long-lasting Double-strand DNA Breaks by Immunofluorescence Microscopy
Published on: June 8, 2018
Related Concept Videos
Gene Conversion
Gene Conversion
Homologous Recombination
Homologous Recombination
Fixing Double-strand Breaks
Fixing Double-strand Breaks