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Figure 10.
Figure 10. Stereo views of the T13-T14-T15-T16 loop linked diagonally to the G1·G17·G28·G12 G-tetrad in the
representative relaxation matrix refined structure of the d[G4 (T4G4)3] G-tetraplex. The G-tetrad is shown in yellow, residues
T13andT14 in magentaand residues T15andT16 in cyan. Backbones for all residues are shown in white with the phosphate
oxygen atoms deleted for clarity. (A) View normal to the helix axis emphasizing that the base planes of T13 and T15 are
approximately parallel with the base plane of the G-tetrad and the G12, T13, T14 and T16 residues form approximately
a continuous stack. (B) View down the helix axis emphasizing the stacking patterns of T13 on G12 and T15 on G1.
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