Averaging data derived from images of helical structures with different symmetries.

@article{Derosier1999AveragingDD,
  title={Averaging data derived from images of helical structures with different symmetries.},
  author={David J Derosier and Dr. Michael L. Stokes and Seth A Darst},
  journal={Journal of molecular biology},
  year={1999},
  volume={289 1},
  pages={159-65}
}
There are many examples of macromolecules that form helical tubes or crystals, which are useful for structure determination by electron microscopy and image processing. Helical crystals can be thought of as two-dimensional crystals that have been rolled into a cylinder such that two lattice points are superimposed. In many real cases, helical crystals of a particular macromolecule derive from an identical two-dimensional lattice but have different lattice points superimposed, thus producing… CONTINUE READING

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