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. 2012 Jul 17;68(Pt 8):985–995. doi: 10.1107/S0907444912018549

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© Keating & Pyle 2012

This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.

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Coordinates built using RCrane are highly accurate. A comparison of models built using RCrane (magenta) and published coordinates (green) is shown. Suite numbers are as indicated. Note that the structures built using RCrane have not yet undergone crystallographic refinement. (a) The GANC tetraloop from the group II intron (Toor et al., 2010 ▶). This structure was built into the 3.1 Å experimentally phased map (Toor et al., 2008 ▶) shown contoured at 3.0σ. (b) An S-turn motif from the lysine riboswitch (Garst et al., 2008 ▶) built into a 2.8 Å density map shown contoured at 1.8σ.