5aj4 Bf 3.8 BS01 rna BA 0 K120 H121 Y124 P125 R126 G127 Q128 H130 R132 R133 R134 K135 K86 H87 Y90 P91 R92 G93 Q94 H96 R98 R99 R100 K101 25837512 1 ~ 1569 TYSSLPDDYNCKVELALTSDGRTIVCYHPSVDIPYEHTKPIPPPPPPPPPPPPPPPPPPPPPPPPPEHLEQGPMIEQLSKMFFTTKHRWYPRGQYHRRRRKPNPPKDR