SAMHD1 shapes deoxynucleotide triphosphate homeostasis by interconnecting the depletion and biosynthesis of different dNTPs
Abstract SAMHD1 is a dNTPase that impedes replication of HIV-1 in myeloid cells and resting T lymphocytes.Here we elucidate the substrate activation mechanism of SAMHD1, which involves dNTP binding at allosteric sites and transient tetramerization.Our findings reveal that tetramerization alone is insufficient to promote dNTP hydrolysis; instead, th