Fig. 2: Loop–loop interactions.
From: Structural mechanisms for binding and activation of a contact-quenched fluorophore by RhoBAST
a Extensive tertiary interaction networks exist between loops L3 and L4. b Two interwoven WC base pairs between L3 and L4. c, d Tertiary interactions involved in C52 and its neighboring residues. e Two stacked base triple interactions and ribose zipper. f, g Diagram of interaction networks of the two consecutive base triples. h Intercalated conformation of the tetranucleotides from G31 to G34 within L3. i Tertiary interactions involved in G34 and A50. j Two Mg2+ (magenta sphere) bring together residues C8 and G37, A36 and C53, respectively. The gray and green dashed lines denote the hydrogen bonds and the coordination of Mg2+ ions with the RNA phosphate groups, respectively.
