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The role of small-angle scattering in structure-based screening applications

  • Po-chia Chen
  • Janosch Hennig
Review

Abstract

In many biomolecular interactions, changes in the assembly states and structural conformations of participants can act as a complementary reporter of binding to functional and thermodynamic assays. This structural information is captured by a number of structural biology and biophysical techniques that are viable either as primary screens in small-scale applications or as secondary screens to complement higher throughput methods. In particular, small-angle X-ray scattering (SAXS) reports the average distance distribution between all atoms after orientational averaging. Such information is important when for example investigating conformational changes involved in inhibitory and regulatory mechanisms where binding events do not necessarily cause functional changes. Thus, we summarise here the current and prospective capabilities of SAXS-based screening in the context of other methods that yield structural information. Broad guidelines are also provided to assist readers in preparing screening protocols that are tailored to available X-ray sources.

Keywords

Small-angle scattering Screening Structural biology 

Notes

Author Contributions

P.C. and J.H. co-wrote the article.

Funding information

P.C. was supported by the EIPOD postdoctoral programme cofunded by the European Molecular Biology Laboratory (EMBL) and the Marie Curie Actions Cofund grant MSCACOFUND-FP no. 664726. J.H. gratefully acknowledges the EMBL and the German Research Council (Deutsche Forschungsgemeinschaft, DFG) for support via an Emmy-Noether Fellowship and the Priority Programme SPP1935.

Compliance with Ethical Standards

Conflict of interest

P.C. declares that he has no conflict of interest. J.H. declares that he has no conflict of interest.

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© International Union for Pure and Applied Biophysics (IUPAB) and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Structural and Computational Biology UnitEuropean Molecular Biology Laboratory HeidelbergHeidelbergGermany

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