Fig. 3.

Northwestern blot analysis to identify tobacco host proteins that interact with PVX SL1 RNAs. Two-DE Northwestern blot analysis using ³²P-labeled SL1(+) RNA transcripts (A) and ³²P-labeled SL1(−) RNA transcripts (B). Arrows indicate the excised spots for MALDI TOF MS analysis; the spot number adjacent to each arrow indicates each of the 24 identified proteins (see Table 1). The five locations where host proteins were commonly found by both RNA probes are indicated by asterisks.