Fig 3. Orthopoxvirus K3 orthologs show differential PKR inhibition.
HeLa-PKRkd cells were transfected with expression vectors encoding firefly luciferase (0.05 μg), with either VACV K3L, VARV C3L, CPXV-D 043/TATV 037, or CMLV 032 (0.4 μg), and PKR (0.2 μg) from the indicated species in four groups (A-D). Luciferase activities were measured as described in Fig 1. Error bars represent the standard deviations from three independent transfections. Results shown are representative of at least three independent experiments.