Fig. 3. Structural studies of Bvht modular sub-domains at 6 mM Mg²⁺.

a Secondary structures of full-length Bvht based on chemical probing experiments, depicting its modular sub-domains. b Averaged 3-D SAXS solution conformation of full-length Bvht and its modular sub-domains. Blue mesh, averaged solution structure of full-length Bvht; yellow, 5′ module of Bvht; cyan, 3′ module of Bvht. While multiple orientations of the modules fit into the full-length map, we chose orientations most consistent with the connectivity of the secondary structure. c 180° rotated view of (b).