4v71 AU 20.0 BS01 rna AA 0 R16 F18 R20 R33 Y37 V52 K53 R14 F16 R18 R31 Y35 V50 K51 ? 0003735,0005840,0006412 P68679 24186064 5 ~ 1534 IKVRENEPFDVALRRFKRSCEKAGVLAEVRRREFYEKPTTERKRAKASAVK