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Proteome-wide Quantification of Labeling Homogeneity at the Single Molecule Level
Published on: April 19, 2019
Sensitive bioanalysis: combining single-molecule spectroscopy with mono-labeled self-quenching probes
Nicole Marmé1, Jens-Peter Knemeyer
1Institute of Physical Chemistry, University of Heidelberg, Im Neuenheimer Feld 229, Heidelberg, Germany. marme@single-molecule-spectroscopy.de
Analytical and Bioanalytical Chemistry
|June 15, 2007
Summary
This review highlights fluorescence single-molecule spectroscopy for ultra-sensitive bioanalysis. Novel assays using self-quenching probes and photoinduced electron transfer (PET) are presented for DNA, enzyme, and antibody detection.
Area of Science:
- Analytical Chemistry
- Biochemistry
- Molecular Biology
Background:
- Fluorescence single-molecule spectroscopy offers high sensitivity for bioanalysis.
- Self-quenching probes enhance assay sensitivity.
- Photoinduced electron transfer (PET) is a key quenching mechanism.
Purpose of the Study:
- To review novel bioassays utilizing fluorescence single-molecule spectroscopy.
- To explore the application of self-quenching probes in sensitive detection.
- To present assays based on PET-quenched mono-labeled fluorescent probes.
Main Methods:
- Single-molecule spectroscopy.
- Development of mono-labeled fluorescent probes.
- Application of photoinduced electron transfer (PET) for quenching.
Main Results:
- Demonstration of ultra-sensitive DNA assays.
- Development of sensitive enzyme detection assays.
- Creation of novel antibody detection assays.
Conclusions:
- Fluorescence single-molecule spectroscopy is a powerful tool for modern bioanalysis.
- PET-quenched mono-labeled probes enable highly sensitive assays.
- This approach is versatile for detecting DNA, enzymes, and antibodies.

