Università della Svizzera italiana

SAMHD1 promotes DNA end resection to facilitate DNA repair by homologous recombination

Daddacha, Waaqo ; Koyen, Allyson E. ; Bastien, Amanda J. ; Head,Pamela Sara E. ; Dhere, Vishal R. ; Nabeta, Geraldine N. ; Connolly, Erin C. ; Werner, Erica ; Madden, Matthew Z. ; Daly, Michele B. ; Minten, Elizabeth V. ; Whelan, Donna R. ; Schlafstein, Ashley J. ; Zhang, Hui ; Anand, Roopesh ; Doronio, Christine ; Withers, Allison E. ; Shepard, Caitlin ; Sundaram, Ranjini K. ; Deng, Xingming ; Dynan, William S. ; Wang, Ya ; Bindra, Ranjit S. ; Cejka, Petr ; Rothenberg, Eli ; Doetsch, Paul W. ; Kim, Baek ; Yu, David S.

In: Cell reports, 2017, vol. 20, no. 8, p. 1921-1935

DNA double-strand break (DSB) repair by homologous recombination (HR) is initiated by CtIP/MRN-mediated DNA end resection to maintain genome integrity. SAMHD1 is a dNTP triphosphohydrolase, which restricts HIV- 1 infection, and mutations are associated with Aicardi-Goutières syndrome and cancer. We show that SAMHD1 has a dNTPase-independent function in promoting DNA end resection to facilitate...