4qvc D 1.99 BS01 rna G 0 Y25 N28 G29 I30 K31 Y20 N23 G24 I25 K26 ? 0003723,0006355 Kd=22nM C1IFD2 25670676 1 ~ 4 SLQDPFLNALRRERVPVSIYLVNGIKLQGQIESFDQFVILLKNTVSQMVYKHAISTVVPS