6gc5 B 1.9 BS01 rna F 0 F247 Y249 K274 F289 Q316 K320 T321 F5 Y7 K32 F43 Q70 K74 T75 ? 0003676,0003723 Kd=0.65uM Q15717 30718402 2 ~ 4 GWCIFIYNLGQDADEGILWQMFGPFGAVTNVKVIRDKCKGFGFVTMTNYEEAAMAIASLNGYRLGDKILQVSFKTN