6rxv CZ 4.0 BS01 rna C1 0 R536 R537 S539 K540 R542 R1 R2 S4 K5 R7 ? 0000462,0005634,0005730 G0SAJ6 31378463 1 ~ 2374 RRASKGRKLRYTVHEKLQNFMAPEDRRSWEEHAIDRLFGTLFGQ