Figure 4
Neutron diffraction studies of NaK2K. (a) A large crystal of NaK2K formed from hydrogenated protein produced neutron diffraction data to 3.50 Å resolution. (b) A low-resolution (3.5 Å) 2Fo − Fc neutron density map at 1σ of the NaK2K selectivity filter is shown as a blue mesh; higher resolution data will be needed to probe the contents of the SF. |