
(A) A schematic diagram for the H-type pseudoknot motif, which is divided into three single-stranded loops (L1, L2 and L3, green and orange) and two helix stems (S1 and S2, blue) that may contain an internal/bulge loop. (B–I) Schematic diagrams for the H-type pseudoknot motif with one or more phantom linkers in different positions. Structures that contain the linkers are labeled. The phantom linkers are depicted as red dots.










