Single-particle techniques offer an unprecedented opportunity to understand the role of structural variability in biological function. They also call into question the meaning of ‘a structure’ and its relevance to function.
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Acknowledgements
I am indebted to my colleagues at the University of Wisconsin Milwaukee for many discussions, and to J. Frank, A. Singharoy for valuable comments on the manuscript. The research conducted at the University of Wisconsin Milwaukee was supported by the US Department of Energy, Office of Science, Basic Energy Sciences under award DE-SC0002164 (algorithm design and development), and by the US National Science Foundation under awards STC 1231306 (numerical trial models and data analysis) and 1551489 (underlying analytical models).
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Ourmazd, A. Cryo-EM, XFELs and the structure conundrum in structural biology. Nat Methods 16, 941–944 (2019). https://doi.org/10.1038/s41592-019-0587-4
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DOI: https://doi.org/10.1038/s41592-019-0587-4
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