Twisted X-rays unravel the complexity of helical structures

Since the discovery of the diffraction of X-rays by crystals just over 100 years ago, X-ray diffraction as a method of structure determination has dominated structural research in materials science and biology. However, many of the most important materials whose structures remain unknown do not readily crystallize as three-dimensional periodic structures. Crystallization can also alter the properties of the material to be studied: a crystallized protein may not function in the way that it...

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