4v68 AR 6.4 BS01 rna AA 0 K49 I50 R53 K61 Q63 R64 K71 R72 R74 I75 F81 K31 I32 R35 K43 Q45 R46 K53 R54 R56 I57 F63 ? 0003735,0005840,0006412 Q5SLQ0 19229291 5 ~ 1531 KAKVKATLGEFDLRDYRNVEVLKRFLSETGKILPRRRTGLSAKEQRILAKTIKRARILGLLPFTEKLVRK