2gxb B 2.25 BS01 rna F 0 K170 N173 R174 Y177 T191 P192 P193 K32 N35 R36 Y39 T53 P54 P55 3.5.4.37 0003723,0003726 P55265 17437712 1 ~ 6 MEQRILKFLEELGEGKATTAHDLSGKLGTPKKEINRVLYSLAKKGKLQKEAGTPPLWKIAVST