4u1u CU 2.95 BS01 rna CA 0 R18 Y38 E39 K49 A50 R15 Y35 E36 K46 A47 ? 0003735,0005840,0006412 P68679 24957822 2 ~ 1540 IKVRENEPFDVALRRFKRSCEKAGVLAEVRRREFYEKPTTERKRAKASAVK