Figure 5From: HIV-1 Vpr activates the G2 checkpoint through manipulation of the ubiquitin proteasome systemDDB2 is dispensable for Vpr function. Xeroderma pigmentosum complementation group E fibroblasts or control fibroblasts were infected with pHR-VPR or mock-infected and, 48 hours later, cell cycle profile was analyzed.Back to article page