UNIT 17.4 Crystallization of Macromolecules
Published Online: 1 FEB 2004
Copyright © 2003 by John Wiley and Sons, Inc.
Lab Protocol Title
Current Protocols in Protein Science
How to Cite
Messick, T. and Marmorstein, R. 2004. Crystallization of Macromolecules. Current Protocols in Protein Science. 34:17.4:17.4.1–17.4.25.
- Published Online: 1 FEB 2004
- Published Print: NOV 2003
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X-ray crystallography has evolved into a very powerful tool to determine the three-dimensional structure of macromolecules and macromolecular complexes. The major bottleneck in structure determination by X-ray crystallography is the preparation of suitable crystalline samples. This unit outlines steps for the crystallization of a macromolecule, starting with a purified, homogeneous sample. The first protocols describe preparation of the macromolecular sample (i.e., proteins, nucleic acids, macromolecular complexes, and membrane proteins). The preparation and assessment of crystallization trials is then described, along with a protocol for determining whether the crystals obtained are composed of macromolecule or salt. Next, the optimization of crystallization conditions is presented. Finally, protocols that facilitate the growth of larger crystals through seeding are described.