Snap-tagged Receptors
Snap-tagged Receptors - Related Videos
07:38
Fluorescent Labeling of COS-7 Expressing SNAP-tag Fusion Proteins for Live Cell Imaging
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Cited by 8 •
2010
SNAP-tag and CLIP-tag protein labeling systems enable the specific, covalent attachment of molecules, including fluorescent dyes, to a protein of interest in live cells. Once cloned and expressed, the tagged protein can be used with a variety of substrates for numerous downstream applications without having to clone again.
08:04
Evaluating the Accuracy of Snap Judgments
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2023
Source: Diego Reinero & Jay Van Bavel—New York University Social psychologists have long been interested in the way people form impressions of others. Much of this work has focused on the errors people make in judging others, such as the exaggerated influence of central traits (such as "warm" and "cold"), the insufficient weight given to the context in which others' behavior takes place, and the tendency for people to make judgments that conform to their initial expectations about another.
10:41
Using a GFP-tagged TMEM184A Construct for Confirmation of Heparin Receptor Identity
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Cited by 2 •
2017
A construct encoding TMEM184A with a GFP tag at the carboxy-terminus designed for eukaryotic expression, was employed in assays designed to confirm the identification of TMEM184A as a heparin receptor in vascular cells.
11:57
Using an α-Bungarotoxin Binding Site Tag to Study GABA A Receptor Membrane Localization and Trafficking
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Cited by 5 •
2014
Here we demonstrate the use of fluorescent Alexa dye coupled to α-bungarotoxin to measure GABA A receptor surface localization and endocytosis in hippocampal neurons. Through the use of constructs bearing a short extracellular tag that binds α-bungarotoxin, analysis of plasma membrane protein endocytic trafficking can be achieved.
09:59
Utilizing pHluorin-tagged Receptors to Monitor Subcellular Localization and Trafficking
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Cited by 3 •
2017
Labeling the extracellular domain of a membrane protein with a pH sensitive fluorophore, superecliptic pHluorin (SEP), allows subcellular localization, expression, and trafficking to be determined. Imaging SEP-labeled proteins with total internal reflection fluorescence microscopy (TIRFM) enables the quantification of protein levels in the peripheral ER and plasma membrane.
FAQs
The SNAP-tag contains a reactive site that forms a covalent bond with synthetic benzylguanine derivatives. Researchers can attach fluorescent dyes, biotin, or other functional probes to the tagged receptor through this reaction. Because the labeling depends on the engineered tag and its matching substrate, the receptor can be marked selectively while retaining its encoded structure.
Benzylguanine derivatives serve as interchangeable labeling reagents for the same SNAP-tagged receptor. Fluorescent versions support visualization, biotin-containing versions enable affinity-based detection, and other functional probes provide additional experimental options. This modularity lets investigators adapt the labeling strategy to the measurement they need without redesigning the receptor construct.
Labeling allows researchers to examine receptor expression at the cell surface and follow changes associated with trafficking, internalization, and recycling. Because the system supports real-time analysis, these events can be evaluated with greater temporal precision while imaging preserves information about where receptors are located within living cells.
Controlled surface labeling helps distinguish receptors exposed at the cell membrane from receptor populations located elsewhere in the cell. Multiplexed imaging extends this approach by allowing receptor-related signals to be examined together through multiple labeling strategies. In bioengineering experiments, these capabilities improve spatial resolution when analyzing receptor distribution and behavior.
Researchers first genetically engineer the receptor by fusing it to a SNAP-tag and express the construct in cells. They then apply a suitable synthetic benzylguanine derivative carrying a fluorescent dye, biotin, or another probe. Subsequent imaging or analysis reveals receptor expression and behavior, including trafficking, internalization, or recycling.
The system connects engineered receptor design with direct observation of receptor behavior in living cells. Researchers can monitor how receptor expression, trafficking, and signaling-related behavior change while developing responsive cell systems. This feedback helps relate the engineered receptor’s location and dynamics to the performance of the bioengineered cell.
Receptor-based therapies depend on understanding where receptors are expressed and how they move through cells. SNAP-tag labeling provides tools to visualize these features with spatial and temporal precision, while biotin or other functional probes broaden analysis options. Consequently, the approach can help researchers evaluate engineered receptors and their behavior during therapeutic development.