Detection of Protein Cage Assembly with Bisarsenic Fluorescent Probes

  • Thomas A. Cornell
  • Brendan P. OrnerEmail author
Part of the Methods in Molecular Biology book series (MIMB, volume 1252)


We describe a method for the detection of specific protein-protein interactions in protein cages through the exploitation of designed binding sites for bisarsenic fluorescent probes. These sites are engineered to be protein-protein interface specific. We have adapted this method to ferritins; however, it could conceivably be applied to other protein cages. It is thought that this technique could be utilized in the thermodynamic and kinetic characterization of cage assembly mechanisms and in the high-throughput screening of protein cage libraries for the discovery of proteins with new assembly properties or of optimized conditions for assembly.

Key words

FlAsH-EDT2 Protein-protein interactions Fluorescence detection Oligomerization state Ferritin 


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Department of ChemistryKing’s College LondonLondonUK
  2. 2.Department of Chemistry, School of Natural and Mathematical SciencesKing’s College LondonLondonUK

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