3egz A 2.2 BS01 rna B 0 Y208 N210 N211 E214 K217 S243 L244 K245 M246 R247 Q249 F251 K275 R278 Q280 K283 D285 S286 D287 Y8 N10 N11 E14 K17 S43 L44 K45 M46 R47 Q49 F51 K75 R78 Q80 K83 D85 S86 D87 ? 0003676,0003723 Kd=0.6nM P09012 18940672 1 ~ 65 TRPNHTIYINNLNEKIKKDELKKSLHAIFSRFGQILDILVSRSLKMRGQAFVIFKEVSSATNALRSMQGFPFYDKPMRIQYAKTDSDIIAK