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. Author manuscript; available in PMC: 2012 Apr 12.
Published in final edited form as: Structure. 2011 Oct 12;19(10):1456–1466. doi: 10.1016/j.str.2011.08.002

Figure 2. Structure of the IIIef four-way junction.

Figure 2

(A) Close-up of coaxial stacking between the main stem of dom III (yellow) and SI (blue). (B) Close-up of complex coaxial stacking within the sidecar helix, between IIIe (red), SII/J (deep blue) and SII (green). Note that the base of U324 (L3) is omitted from the crystallographic model, as no density was observed for this nucleotide apart from the sugar-phosphate backbone. Ni2+ ions are shown as grey spheres.