Journal
PLOS ONE
Volume 2, Issue 7, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0000665
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Categories
Funding
- NIH [R24-CA92782, P50-CA86355]
- Sandler Foundation
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Background. Probes that allow site-specific protein labeling have become critical tools for visualizing biological processes. Methods. Here we used phage display to identify a novel peptide sequence with nanomolar affinity for near infrared (NIR) (benz) indolium fluorochromes. The developed peptide sequence (IQ-tag'') allows detection of NIR dyes in a wide range of assays including ELISA, flow cytometry, high throughput screens, microscopy, and optical in vivo imaging. Significance. The described method is expected to have broad utility in numerous applications, namely site-specific protein imaging, target identification, cell tracking, and drug development.
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