Catalyzes the cleavage of 2'-deoxyuridine 5'-triphosphate (dUTP) into 2'-deoxyuridine 5'-monophosphate (dUMP) and inorganic pyrophosphate and through its action efficiently prevents uracil misincorporation into DNA and at the same time provides dUMP, the substrate for de novo thymidylate biosynthesis (By similarity). Inhibits peroxisome proliferator-activated receptor (PPAR) activity by binding of its N-terminal to PPAR, preventing the latter's dimerization with retinoid X receptor (By similarity). Essential for embryonic development (PubMed:30987342). dUTP + H2O = diphosphate + dUMP + H(+) Pyrimidine metabolism; dUMP biosynthesis; dUMP from dCTP (dUTP route): step 2/2. Homotrimer. Phosphorylated in vivo on Ser-11, a reaction that can be catalyzed in vitro by CDC2. Embryos reach the blastocyst stage, however, they die shortly after implantation and analysis of pre-implantation embryos indicates perturbed growth of both inner cell mass and trophectoderm. Belongs to the dUTPase family.