Article ; Online: Near-instant surface-selective fluorogenic protein quantification using sulfonated triarylmethane dyes and fluorogen activating proteins.
Organic & biomolecular chemistry
2015 Volume 13, Issue 7, Page(s) 2078–2086
Abstract: Agonist-promoted G-protein coupled receptor (GPCR) endocytosis and recycling plays an important role in many signaling events in the cell. However, the approaches that allow fast and quantitative analysis of such processes still remain limited. Here we ... ...
Abstract | Agonist-promoted G-protein coupled receptor (GPCR) endocytosis and recycling plays an important role in many signaling events in the cell. However, the approaches that allow fast and quantitative analysis of such processes still remain limited. Here we report an improved labeling approach based on the genetic fusion of a fluorogen activating protein (FAP) to a GPCR and binding of a sulfonated analog of the malachite green (MG) fluorogen to rapidly and selectively label cell surface receptors. Fluorescence microscopy and flow cytometry demonstrate that this dye does not cross the plasma membrane, binds with high affinity to a dL5** FAP-GPCR fusion construct, activating tagged surface receptors within seconds of addition. The ability to rapidly and selectively label cell surface receptors with a fluorogenic genetically encoded tag allows quantitative imaging and analysis of highly dynamic processes like receptor endocytosis and recycling. |
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MeSH term(s) | Cells, Cultured ; Flow Cytometry ; Fluorescent Dyes/chemistry ; HEK293 Cells ; HeLa Cells ; Humans ; Methane/chemistry ; Microscopy, Fluorescence ; Molecular Structure ; Proteins/chemistry ; Proteins/genetics ; Receptors, G-Protein-Coupled/chemistry ; Surface Properties |
Chemical Substances | Fluorescent Dyes ; Proteins ; Receptors, G-Protein-Coupled ; Methane (OP0UW79H66) |
Language | English |
Publishing date | 2015-02-21 |
Publishing country | England |
Document type | Journal Article ; Research Support, N.I.H., Extramural |
ZDB-ID | 2097583-1 |
ISSN | 1477-0539 ; 1477-0520 |
ISSN (online) | 1477-0539 |
ISSN | 1477-0520 |
DOI | 10.1039/c4ob02309a |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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