Solvent flattening: real and reciprocal space

• Subtract mean solvent density from whole map

  • only changes F000 in reciprocal space

• Multiply by mask: M = 0 for solvent, 1 for protein

• Each new F is G-weighted sum (convolution) of its neighbours

  • “G-function” is (complex) Fourier transform of mask

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© 1999-2005 Randy J Read, University of Cambridge. All rights reserved.

Last updated: 7 June, 2005