Histone H2A is rapidly phosphorylated to γH2AX at the site of DNA double-strand breaks (DSBs). A new, genome-wide analysis in Saccharomyces cerevisiae reports a second histone phosphorylation, γH2B, and examines the modification kinetics and chromosomal distribution of both γH2AX and γH2B and their propagation from DSBs to other genomic loci.
- Cheng-Sheng Lee
- Kihoon Lee
- James E Haber