Fig. 3.
The zinc-mediated packing of the coiled coils with Zn(II) and As(III) ions is shown in pink and cyan, respectively. (A) Bottom-up view of a central coiled coil (green) with the six Zn(II) ions that are coordinated by side chains at the C-terminal end. (B) Side view of the trimeric structure of As(CSL9C)3 with a different perspective of the Zn(II) coordination to the exterior residues of the coiled coils. In both panels, only two of eight symmetry related Zn(II) ions are included for clarity.