Mahadevaiah SK, et al. (2001) Recombinational DNA double-strand breaks in mice precede synapsis. Nat Genet 27(3):271-6
Abstract: In Saccharomyces cerevisiae, meiotic recombination is initiated by Spo11-dependent double-strand breaks (DSBs), a process that precedes homologous synapsis. Here we use an antibody specific for a phosphorylated histone (gamma-H2AX, which marks the sites of DSBs) to investigate the timing, distribution and Spo11-dependence of meiotic DSBs in the mouse. We show that, as in yeast, recombination in the mouse is initiated by Spo11-dependent DSBs that form during leptotene. Loss of gamma-H2AX staining (which in irradiated somatic cells is temporally linked with DSB repair) is temporally and spatially correlated with synapsis, even when this synapsis is 'non-homologous'.
|Status: Published||Type: Journal Article||PubMed ID: 11242108|
Topics addressed in this paper
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|Non-Fungal Related Genes/Proteins|