FIG. 1.

Identification of the vIRF1-binding sequence. (A) Gel shift analysis of selected vIRF1-binding sites. Gel shift assays were performed with DNA selected at each round as probes, together with GST-vIRF1 protein. The number of selection cycles is shown above each lane. Shifted bands are indicated with arrows. (B) Selected vIRF1-binding sequences. Each cloned sequence after three rounds of selection is presented. Sequences were aligned for maximum identity. (C) Statistical results of each base match.