The incorporation of the strand displacement motif leads to two key changes in the structure of C-stars, compared to the conventional design. Namely, two nicks are present in the arm-forming duplex rather than one, and there is a 6-base ssDNA dangle one-quarter of the way along the arm. Remarkably, even with these substantial changes, the system retains the same BCC crystalline symmetry of conventional C-stars, as demonstrated by SAXS (black trace, Fig. ). The measured lattice parameter, reaching a = 34.2 nm, further extends the range demonstrated with inert C-stars, while being equally well predicted by Eq. 1 (green diamond in Fig. ), confirming that the crystal structure is fully conserved.