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. 2009 Aug 7;37(18):6249–6258. doi: 10.1093/nar/gkp647

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© 2009 The Author(s)

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 3. — The structure of R12. (A) A stereoview of the superposition of 10 final structures of R12. The monomers are colored red and blue, respectively, phosphate groups being colored green. (B) A stereoview of the representative structure with the lowest energy. The A6 residues of each monomer are colored magenta and cyan, respectively. The chains connecting the C3′ and C4′ atoms of residues of each monomer are indicated by red and blue tubes, respectively. (C) Stacking between the tetrad (yellow) and hexad (red) planes of the upper monomer of the representative structure. (D) Stacking between the two hexad planes (red and blue) of each monomer of the representative structure.