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. 2019 Nov 14;47(22):11921–11930. doi: 10.1093/nar/gkz1008

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© The Author(s) 2019. Published by Oxford University Press on behalf of Nucleic Acids Research.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 6. — An i-motif/duplex hybrid structure formed from the C9-Br derivative, d(CCAGGCTGC^BrAA). (A) Secondary structure representation of interactions formed between symmetry-related strands. Black dashes represent Watson–Crick base pairs. Black circles represent noncanonical base pairs. (B) Stick representation of the 5′ i-motif-consisting CCAG homo base stacking motif linked to the 3′ antiparallel duplex. The i-motif and duplex are rotated 70° about the x-axis with respect to each other. Chains A and A’ are in green and magenta, respectively. Chains B and B’ are in cyan and black, respectively.