6rxu CZ 3.5 BS01 rna C1 0 R536 R537 S539 K540 R1 R2 S4 K5 ? 0000462,0005634,0005730 G0SAJ6 31378463 1 ~ 2374 RRASKGRKLRYTVHEKLQNFMAPEDRRSWEEHAIDRLFGTLFGQ