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Figure 2.
Figure 2. The 10 lowest energy structures (of 28 converged
structures; Table 1). a, Structures superimposed on the
internal loop B (residues 20−26, 36−40, 42−44). View is
into the minor groove of the internal loop B. Stem 1 and stem 2
and UUCG tetraloop from the lowest energy structure are shown.
b, Superimposition on the residues forming the UV-photosensitive
module (residues 20−23, 40−44). c, Superimposition on the 12
residues forming the lower stem and the UUCG tetraloop. Adenine
nucleotides are shown in red, guanines in green, cytosines in
yellow and uracils in cyan. For clarity, only 10 structures are
shown superimposed.
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