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. Author manuscript; available in PMC: 2011 Dec 27.
Published in final edited form as: J Phys Chem B. 2010 Nov 10;114(48):15991–16002. doi: 10.1021/jp107193z

Figure 1.

Figure 1

A) Sequence and secondary structure of the HIV-1 TAR RNA construct used in this study, which includes a stable tetraloop for convenience instead of the native TAR loop. The U38 residue, which was deuterium labeled at the H5 and H6 sites for solid-state NMR and which is the subject of the present theoretical study, is highlighted in red. B) Lowest energy free TAR structure 1ANR. Hydrogen atoms have been removed from the figure for clarity. The Principal Axis System of the rotational diffusion tensor (PASd) is superimposed upon the molecule.