Journal
METHODS AND APPLICATIONS IN FLUORESCENCE
Volume 4, Issue 4, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/2050-6120/4/4/042004
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Funding
- NIH [P01-GM087253-12, R01-GM086352-35, T32-GM008275]
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Subdomains of macromolecules often undergo large orientation changes during their catalytic cycles that are essential for their activity. Tracking these rearrangements in real time opens a powerful window into the link between protein structure and functional output. Site-specific labeling of individual molecules with polarized optical probes and measurement of their spatial orientation can give insight into the crucial conformational changes, dynamics, and fluctuations of macromolecules. Here we describe the range of single molecule optical technologies that can extract orientation information from these probes, review the relevant types of probes and labeling techniques, and highlight the advantages and disadvantages of these technologies for addressing specific inquiries.
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