Conformation of Receptor Adopted upon Interaction with Virus Revealed by Site-Specific Fluorescence Quenchers and FRETAnalysis

Jürgen Wruss, Philipp Pollheimer, I. Meindl, A. Reichel, Wolfgang Schöfberger, J. Piehler, Robert Tampé, Dieter Blaas, Hermann Gruber

Research output: Contribution to journalArticlepeer-review

Abstract

Human rhinovirus serotype 2 (HRV2) specifically binds to very-low-density lipoprotein receptor (VLDLR). Among the eight extracellular repeats of VLDLR, the third module (V3) has the highest affinity for the virus, and 12 copies of the genetically engineered concatamer V33333-His6 were found to bind per virus particle. In the present study, ring formation of V33333-His6 about each of the 12 5-fold symmetry axes on HRV2 was demonstrated by fluorescence resonance energy transfer (FRET) between donor and acceptor on N- and C-terminus, respectively. In particular, the N-terminus of V33333-His6 was labeled with fluorescein, and the C-terminus with a new quencher which was bound to the His6 tag with nanomolar affinity (Kd ∼10-8 M) in the presence of 2 μM NiCl2.
Original languageEnglish
Pages (from-to)5478
Number of pages5
JournalJournal of the American Chemical Society
Volume131
Publication statusPublished - 2009

Fields of science

  • 103 Physics, Astronomy
  • 104003 Inorganic chemistry
  • 204 Chemical Process Engineering
  • 104016 Photochemistry
  • 104021 Structural chemistry
  • 106032 Photobiology
  • 106002 Biochemistry
  • 210006 Nanotechnology
  • 107 Other Natural Sciences
  • 211908 Energy research
  • 301904 Cancer research
  • 301305 Medical chemistry
  • 105904 Environmental research

JKU Focus areas

  • Nano-, Bio- and Polymer-Systems: From Structure to Function
  • Engineering and Natural Sciences (in general)

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