Skip to main content
. 2013 Aug 6;8(8):e71420. doi: 10.1371/journal.pone.0071420

Figure 11. Interstrand bridging via combinations of reverse tridentate and dual cation-pi interactions in minor groove of 1enn.

Figure 11

a) Mg48 FSW W32 maintains a dual cation-pi orientation through interactions with the pyrimidine rings of A4 and G18 on opposing strands. b) Interstrand bridging of G9 and A13 by Mg31 FSWs. W32 forms dual cation-pi interactions with the pyrimidine rings of A13 and G9. W34 demonstrates an inverse tridentate interaction by forming cation-pi interactions with both the imidazole and pyrimidine rings of G9 and hydrogen bonding with O4’ of G9. Interacting FSW (light green); Mg2+ (dark green); base ring centroids (purple).