FIG. 5.

Competition of various in vitro transcripts with RNA.B for binding of p45, p39, and p26. UV cross-linking experiments were performed with liver nuclear extracts from untreated or CTL-injected mice under standard conditions described in Materials and Methods. A 30- and a 60-fold molar excess of unlabeled in vitro transcripts RNA.B, GAPDH, actin, RRE, and CTE were added into the binding reaction mixture prior to the addition of 40 fmol of ³²P-labeled RNA.B.