4v7h BS 8.9 BS01 rna B5 0 R17 T19 K35 S38 K41 Q42 R43 N45 R47 R48 W51 R10 T12 K28 S31 K34 Q35 R36 N38 R40 R41 W44 20004163 1 ~ 3396 FSGAKIYPGRGTLFVRGDSKIFRFQNSKSASLFKQRKNPRRIAWT