2r5y B 2.6 BS01 dna C 0 R205 F208 Q244 N247 N251 R255 R1 F4 Q43 N46 N50 R54 ? 0000981,0003677,0006355 Kd=10.3nM P40427 17981120 1 ~ 20 RRNFSKQASEILNEYFYSHLSNPYPSEEAKEELARKCGITVSQVSNWFGNKRIRYKKNI 2r5y B 2.6 BS02 dna D 0 R205 R206 Y225 R253 I254 K257 R1 R2 Y24 R52 I53 K56 ? 0000981,0003677,0006355 Kd=10.3nM P40427 17981120 21 ~ 40 RRNFSKQASEILNEYFYSHLSNPYPSEEAKEELARKCGITVSQVSNWFGNKRIRYKKNI