Structure Determination
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چکیده
Most of the protein structures described and discussed in this book have been determined either by X-ray crystallography or by nuclear magnetic resonance (NMR) spectroscopy. Although these techniques both depend on data derived from physical techniques for probing structure, their interpretation is not unambiguous and entails assumptions and approximations often depending upon knowledge of the protein from other sources, including its biology. This chapter briefly describes how structures are determined by X-ray crystallography and NMR, how the data are interpreted, and what contributes to the accuracy of a structure determination. 5
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