Improved detection of DNA replication fork-associated proteins
Rivard et al. report that a combination of density-based replisome enrichment and label-free quantitative mass spectrometry (iPOND2-DRIPPER) substantially increases both replication and repair factor yields and the dynamic range of protein quantification. Using this method, the authors identify notable ubiquitination and spatiotemporal changes in replication-fork-associated proteins following replication stress.