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. Author manuscript; available in PMC: 2024 Dec 6.
Published in final edited form as: ACS Nano. 2019 Oct 28;13(11):12630–12637. doi: 10.1021/acsnano.9b04148

Figure 4. Coiled-coil organization and lyotropic liquid crystalline state of CCSHR nanofibers.

Figure 4

(a) Wide-angle X-ray diffraction pattern from partially aligned fibers. All of the reflections are labeled. (b) Schematic illustration of nanofibers assembly. CCSHR has a helical pitch of 4.9 Å and the two helices are inclined away from the parallel position in helical dimers. Propagation of the dimers afforded coiled-coil structure with a super helical pitch of 10.8 nm. (c) Birefringence from lyotropic liquid crystalline phases observed under polarized optical microscopy phases (scale bar 200 μm). (d) Temperature dependent lyotropic to isotropic phase transition (scale bar 500 μm).