4u20 B0 2.9 BS01 rna BA 0 A2 V3 Q4 Q5 N6 K7 T9 R10 S11 K12 R13 M15 R16 R17 S18 H19 R40 H41 Y49 R50 A1 V2 Q3 Q4 N5 K6 T8 R9 S10 K11 R12 M14 R15 R16 S17 H18 R39 H40 Y48 R49 ? 0000027,0000302,0002181,0003735,0005515,0005737,0005829,0005840,0006412,0009314,0015934,0022625,1990904 P0A7N4 24957822 1 ~ 2903 AVQQNKPTRSKRGMRRSHDALTAVTSLSVDKTSGEKHLRHHITADGYYRGRKVIAK