Following the folding of RNA with time-resolved synchrotron X-ray footprinting

Bianca Sclavi, Sarah Woodson, Michael Sullivan, Mark Chance, Michael Brenowitz

Research output: Contribution to journalArticlepeer-review

70 Scopus citations


The rapid mixing synchrotron X-ray footprinting technique described in this article allows nucleic acid folding and ligand binding reactions to be followed on a millisecond time resolution with single nucleotide resolution. In principle, the change in ·OH protection of every nucleotide in a nucleic acid hundreds of nucleotides long can be monitored separately. In addition, a wide range of solution conditions are compatible with the radiolytic generation of ·OH. These characteristics of synchrotron X-ray footprinting create opportunities for conducting thermodynamic and kinetic studies of nucleic acids that are both comprehensive and detailed. Kinetic footprinting studies of a number of systems have been initiated by the Center for Synchrotron Biosciences using this technique.

Original languageEnglish (US)
Pages (from-to)379-402
Number of pages24
JournalMethods in Enzymology
StatePublished - Jan 1 1998

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology


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