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. Author manuscript; available in PMC: 2015 Dec 29.
Published in final edited form as: J Am Chem Soc. 2005 Dec 14;127(49):17277–17285. doi: 10.1021/ja0543090

Figure 8.

Figure 8

Refined structures of the htel3I/htel1U quadruplex. Ten superpositioned lowest-energy intensity-refined structures (a) and one representative structure (b) of the htel3I/htel1U quadruplex. The backbone of htel1U and htel3I is colored in orange and gray, respectively. The Watson-Crick A18·T11 pair is colored magenta, the (G13·G19·G1·G9) tetrad is colored yellow, the (I2·G20·G14·G8) tetrad is colored cyan, and the (G3·G21·G15·G7) tetrad is colored green. Underdefined bases in the loops and terminal bases are not shown for clarity. Slab (c) and surface (d) views of a representative refined structure of the htel3I/htel1U quadruplex. In (d) the backbone of htel1U and htel3I is colored in red and blue, respectively; guanine and adenine bases are colored yellow and red, respectively; thymine and uracil bases are colored blue.