Abstract
Crystal-density measurements may be necessary to define a crystal's molecular-packing arrangement, particularly when a crystal has an unusual packing density (very dense or very open); when there are a large number of subunits in the crystallographic asymmetric unit; when the structure consists of heterogeneous subunits, so the molecular symmetry or packing is uncertain; and for crystals of nucleic acids, nucleic acid/protein complexes and viruses. Topics covered in this chapter include: solvent in macromolecular crystals; the Matthews number; algebraic concepts related to crystal density; experimental estimation of hydration; and methods for measuring crystal denisty. A discussion of how to handle solvent density is also given. This chapter is also available as HTML from the International Tables Online site hosted by the IUCr.
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© 2006 International Union of Crystallography
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Westbrook, E.M. (2006). Crystal-density measurements. In: Rossmann, M.G., Arnold, E. (eds) International Tables for Crystallography Volume F: Crystallography of biological macromolecules. International Tables for Crystallography, vol F. Springer, Dordrecht. https://doi.org/10.1107/97809553602060000664
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DOI: https://doi.org/10.1107/97809553602060000664
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-6857-1
Online ISBN: 978-1-4020-5416-7
eBook Packages: Springer Book Archive