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Potential of Single‐Molecule Live‐Cell Imaging for Chemical Translational Biology

Single‐molecule live‐cell imaging is the most direct approach for monitoring the motility of molecules in living cells. Considering the relationship between the motility of molecules and their function, information obtained from single‐molecule imaging involves essential clues for understanding the regulatory mechanisms of the processes of target molecules, and translation to applied sciences such as drug discovery. In this Concept, examples of single‐molecule imaging studies on G protein‐coupled receptors (GPCRs) are mainly introduced, and recent techniques of single‐molecule imaging for overcoming the limitation of single‐molecule live‐cell imaging are discussed. Based on these studies, the prospects of single‐molecule imaging will be outlined.