FIG 1.

Identification of B19V ISE2-interacting proteins. (A) ISE2 wild-type (WT) and ISE2 mutant (mut3) RNA sequences. The two RNAs used to pull down ISE2-interacting proteins are listed. (B) SDS-PAGE. The proteins pulled down by the biotinylated ISE2-WT and ISE2-mut3 RNAs from nuclear lysates of UT7/Epo-S1 cells were separated by 6%, 10%, or 15% SDS-PAGE as indicated and stained with Coomassie blue to visualize proteins. The bands uniquely stained in the ISE2-WT pulldown sample but not in the ISE2-mut3 sample are indicated.