articleJournal of the American Chemical SocietyApr 6, 2007Closed access

Structural Characterization of Flexible Proteins Using Small-Angle X-ray Scattering

Institut de Biologie Structurale · Université Joseph Fourier · +7 more institutions

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Abstract

Structural analysis of flexible macromolecular systems such as intrinsically disordered or multidomain proteins with flexible linkers is a difficult task as high-resolution techniques are barely applicable. A new approach, ensemble optimization method (EOM), is proposed to quantitatively characterize flexible proteins in solution using small-angle X-ray scattering (SAXS). The flexibility is taken into account by allowing for the coexistence of different conformations of the protein contributing to the experimental scattering pattern. These conformers are selected using a genetic algorithm from a pool containing a large number of randomly generated models covering the protein configurational space. Quantitative…

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Authors

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Topics & keywords

Keywords
  • Small-angle X-ray scattering
  • Conformational isomerism
  • Chemistry
  • Scattering
  • Macromolecule
  • Conformational ensembles
  • Intrinsically disordered proteins
  • Flexibility (engineering)
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