53BP1 Regulates DSB Repair Using Rif1 to Control 5′ End Resection

Fixing Broken DNA Some physiological processes, such as immunoglobulin class switching and telomere attrition, result in double-stranded DNA breaks. The DNA damage repair protein, 53BP1, prevents nucleolytic processing of these breaks, but the proteins it partners with to do this are unknown (see th... View More