6v4x B 3.2 BS01 rna Z 0 T2 Q22 D23 H37 N39 R73 E75 T1 Q21 D22 H36 N38 R62 E64 ? 0003723 P14678 32029631 6 ~ 32 TVGKSSKMLQHIDYRMRCILQDGRIFIGTFKAFDKHMNLILCDCDEFRKREEKRVLGLVLLRGENLVSMTVEGPPP