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. 2008 Aug 21;36(17):5482–5515. doi: 10.1093/nar/gkn517

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© 2008 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 1. — Chemical structures of G-quartets and quadruplexes. (A) Anticonformation (top left) and syn conformation (top right) of guanosine. (B) Inosine (left) and 7-deazaG (right) variations. (C) G-quartet with metal ion coordination to GO6.