Interactive model building in neutron macromolecular crystallography
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Updated: Dec 27, 2025

Neutron Crystallography Data Collection and Processing for Modelling Hydrogen Atoms in Protein Structures
Published on: December 1, 2020
1Section for Biochemistry and Structural Biology, Department of Chemistry, Lund University, Lund, Sweden.
Abstract:
This chapter aims to give an overview of the process of interactive model building in macromolecular neutron crystallography for the researcher transitioning from X-ray crystallography alone. The two most popular programs for refinement and model building, phenix.refine and Coot, respectively, are used as examples, and familiarity with the programs is assumed. Some work-arounds currently required for proper communication between the programs are described. We also discuss the appearance of nuclear density maps and how this differs from that of electron density maps. Advice is given to facilitate deposition of jointly refined neutron/X-ray structures in the Protein Data Bank.
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