Question

The PDB file for Ca2+-bound calmodulin (PDB code 1EXR) was determined from a crystal with unit cell dimensions a = 25.0 Å, b = 29.4 Å, and c = 52.8 Å. The x-ray source had a wavelength of 0.886 Å. Considering only diffraction planes parallel with the b-c plane, i.e. Miller indices (h 0 0), give the diffraction angle for the first and second order reflections.

Answer 1