FRET Imaging of Rho GTPase Activity with Red Fluorescent Protein-Based FRET Pairs

Bryce T. Bajar, Xinmeng Guan, Amy Lam, Michael Z. Lin, Ryohei Yasuda, Tal Laviv, Jun Chu

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

Abstract

With the development of fluorescent proteins (FPs) and advanced optical microscopy techniques, Förster or fluorescence resonance energy transfer (FRET) has become a powerful tool for real-time noninvasive visualization of a variety of biological processes, including kinase activities, with high spatiotemporal resolution in living cells and organisms. FRET can be detected in appropriately configured microscopes as changes in fluorescence intensity, lifetime, and anisotropy. Here, we describe the preparation of samples expressing FP-based FRET sensors for RhoA kinase, intensity- and lifetime-based FRET imaging, and postimaging data analysis.

Original languageEnglish
Title of host publicationCell Polarity Signaling
EditorsChenbei Chang, Jianbo Wang
Pages31-43
Number of pages13
ISBN (Electronic)978-1-0716-2035-9
DOIs
StatePublished - 2022

Publication series

NameMethods in Molecular Biology
Volume2438

Keywords

  • FLIM-FRET
  • FRET
  • Fluorescence lifetime
  • Fluorescent protein
  • Rho GTPase
  • RhoA
  • Sensitized emission FRET

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Genetics

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