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. Author manuscript; available in PMC: 2015 Dec 28.
Published in final edited form as: Nat Struct Mol Biol. 2005 Feb 20;12(3):218–224. doi: 10.1038/nsmb906

Figure 3.

Figure 3

Structural elements of the Diels-Alder ribozyme–product complex. The view is rotated 180° along the vertical axis relative to the schematic in Figure 1b. The color code is the same as in Figure 2, unless specified otherwise. Oxygen, nitrogen and phosphorus atoms are, respectively, red, blue and yellow balls. Hydrogen bonds are dotted lines. Coordination bonds to Mg atom are magenta sticks. (a) RNA segment aligned above the product. The A43 backbone is silver. (b) RNA segment aligned below the product. (c) Structural motif highlighting splaying out of G18 and G19.