Single-molecule FRET studies of Cas9 endonuclease

Viktorija Globyte, Chirlmin Joo

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

5 Scopus citations


Since its discovery, the CRISPR–Cas9 system has been in the center of attention for its promising applications in genome editing. However, in order to apply this system successfully in genetic engineering, all aspects of its molecular mechanism have to be well understood. One of the best ways to investigate the intricacies of the molecular mechanism is single-molecule studies as they allow real-time observation of the kinetic processes and provide high spatiotemporal resolution. This chapter describes single-molecule fluorescence resonance energy transfer experiments carried out to investigate the Cas9 protein from Streptococcus pyogenes, providing information on the effects of target truncation, Cas9-induced double-stranded DNA dynamics, and target search.

Original languageEnglish
Title of host publicationCRISPR-Cas Enzymes
EditorsScott Bailey
PublisherAcademic Press Inc.
Number of pages23
ISBN (Print)9780128167601
StatePublished - 1 Jan 2019

Publication series

NameMethods in Enzymology
ISSN (Print)0076-6879
ISSN (Electronic)1557-7988

Bibliographical note

Funding Information:
C.J. was funded by European Research Council under the European Union's Seventh Framework Programme [FP7/2007-2013]/ERC Grant agreement no [309509], a NWO (Netherlands Organization for Scientific Research) VIDI Grant (864.11.005) and the Frontiers of Nanoscience program (NWO).

Publisher Copyright:
© 2019 Elsevier Inc.


  • Cas9
  • Fluorescence
  • FRET
  • Single-molecule
  • Target search
  • TIRF microscopy


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