Transcriptional activity of OCZF. (A) 293T cells were transiently transfected with 1 μg of reporter plasmid pOAEgr-TKLuciferase, along with 0.25 or 2.5 μg of expression vector containing OCZF cDNA (OCZF) or empty vector (pME18S). (B) 293 cells were transiently transfected with 1 μg of reporter plasmid pOATKLuciferase, or pOA-Egr-TKLuciferase with 0.25 μg expression vector containing OCZF cDNA. Rennila luciferase expression vector, p▵TK-RL (0.25 μg), was used as an internal control for transfection. Bars represent the mean and SEM of 3 independent transfections. *P < .05, **P< .01 compared with control reporter vector.