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Figure 3.
Figure 3: Tertiary interactions defining TPP riboswitch
structure and accessibility to the binding pocket. a,
Interaction between J3/2 and P2, mediated by the HMP ring. b,
Stabilization of the J2-4 junction by two stacked tetrads (in
space-filling representation). c, Interactions between L5 and P3
mediated by three K^+ ions (red spheres). d, Surface
representation of RNA and accessibility to the TPP-binding
pocket. TPP is depicted in a stick and mesh representation.
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