4v5k BJ 3.2 BS01 rna BA 0 X5 X6 X7 X8 X9 X10 X33 X81 X2 X3 X4 X5 X6 X7 X30 X78 20852642 6 ~ 2897 AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA