Download citation
Download citation
link to html
A phase-refinement procedure based on iterative skeletonization of electron density maps is presented. As with traditional solvent-flattening methods, refinement alternates between real-space and reciprocal-space representations of the scattering density. A pseudoatom list derived from the modified skeleton of an initial electron density map provides calculated structure-factor amplitudes and phases. Recombination with the observed Fobs values yields a new map that can serve as the starting point for another round of skeletonization. Tests using partial structures to provide starting crystallographic phases have shown this refinement procedure to have a significantly larger radius of convergence than solvent flattening.
Follow Acta Cryst. A
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds