Conformational dynamics of single protein molecules studied by direct mechanical manipulation

Pétur O. Heidarsson, Mohsin M. Naqvi, Punam Sonar, Immanuel Valpapuram, Ciro Cecconi

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Advances in single-molecule manipulation techniques have recently enabled researchers to study a growing array of biological processes in unprecedented detail. Individual molecules can now be manipulated with subnanometer precision along a simple and well-defined reaction coordinate, the molecular end-to-end distance, and their conformational changes can be monitored in real time with ever-improving time resolution. The behavior of biomolecules under tension continues to unravel at an accelerated pace and often in combination with computational studies that reveal the atomistic details of the process under investigation. In this chapter, we explain the basic principles of force spectroscopy techniques, with a focus on optical tweezers, and describe some of the theoretical models used to analyze and interpret single-molecule manipulation data. We then highlight some recent and exciting results that have emerged from this research field on protein folding and protein-ligand interactions.

Original languageEnglish
Title of host publicationDynamics of Proteins and Nucleic Acids
PublisherAcademic Press Inc.
Pages93-133
Number of pages41
ISBN (Print)9780124116368
DOIs
Publication statusPublished - 2013

Publication series

NameAdvances in Protein Chemistry and Structural Biology
Volume92

Bibliographical note

Funding Information: P. O. H. acknowledges the Carlsberg Foundation for financial support. C. C. gratefully acknowledges financial support from Fondazione Cassa di Risparmio di Modena, the EU through a Marie Curie International Reintegration Grant (No. 44952), the Italian MIUR (Grant No. 17DPXLNBEK), and partial support from Italian MIUR FIRB RBPR05JH2P “ITALNANONET.” Dr. Birthe B. Kragelund is thanked for critical reading of parts of this manuscript.

Other keywords

  • Atomic force microscopy
  • Mechanical manipulation
  • Molecular dynamics simulations
  • Optical tweezers
  • Protein folding
  • Protein-ligand interactions
  • Single molecule

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