The specificity of 53BP1 and its co-factors for particular DNA substrates during non-homologous end joining (NHEJ) derives from REV7–shieldin, a four-subunit DNA-binding complex that is required for REV7-dependent NHEJ but not for REV7-dependent DNA interstrand cross-link repair.
- Hind Ghezraoui
- Catarina Oliveira
- J. Ross Chapman