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Keywords:

  • Protein cross-linking;
  • cross-linking reagents;
  • molecular rulers;
  • stochastic dynamics

Abstract

Homobifunctional chemical cross-linking reagents are important tools for functional and structural characterization of proteins. Accurate measures of the lengths of these molecules currently are not available, despite their widespread use. Stochastic dynamics calculations now provide quantitative measures of the lengths, and length dispersions, of 32 widely used molecular rulers. Significant differences from published data have been found.