<prompt> Method s to determine protein structure isareX-Ray CrystallographyNMR SpectroscopyInfrared spectroscopyAll of these  <response>: X-ray crystallography X-ray diffractionUV light spectroscopy and infra-red spectroscopyNuclear magnetic resonance NMR spectroscopyPolychromatic X-ray crystallography Laue diffraction Optical rotatory dispersionCircular dichroismComputer-based modellingMass spectrometry 