4v9n AR 3.4 BS01 rna AA 0 K49 I50 R53 R54 A60 K61 R64 K68 K71 R72 R74 I75 F81 K31 I32 R35 R36 A42 K43 R46 K50 K53 R54 R56 I57 F63 ? 0003735,0005840,0006412 P62659 23769667 5 ~ 1531 KAKVKATLGEFDLRDYRNVEVLKRFLSETGKILPRRRTGLSAKEQRILAKTIKRARILGLLPFTEKLVRK