A Double-Clicking Bis-Azide Fluorogenic Dye for Bioorthogonal Self-Labeling Peptide Tags
Orsolya Demeter1, Eszter A Fodor1, Mihály Kállay2
1Chemical Biology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2, 1117, Budapest, Hungary.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|March 25, 2016
Summary
Researchers developed a novel fluorogenic molecular probe for bioorthogonal labeling. This probe enables robust, two-point tagging of peptides using click chemistry, significantly enhancing fluorescence upon binding.
Area of Science:
- Chemical Biology
- Molecular Probes
- Bioorthogonal Chemistry
Background:
- Biarsenical dyes offer two-point binding specificity but can lack robustness.
- Bioorthogonal click chemistry provides robust and specific bioconjugation.
- There is a need for molecular probes combining these advantageous features.
Purpose of the Study:
- To develop and characterize a novel fluorogenic molecular probe.
- To demonstrate its utility in bioorthogonal two-point tagging of peptides.
- To combine biarsenical dye specificity with click chemistry robustness.
Main Methods:
- Synthesis of a double-quenched, bis-azide fluorogenic probe.
- Characterization of the probe's fluorogenic properties.
- Application in double strain-promoted azide-alkyne cycloaddition with peptide tags.
Main Results:
- The synthesized probe exhibits a significant increase in fluorescence intensity.
- Successful bioorthogonal two-point tagging of bis-cyclooctynylated peptide sequences was achieved.
- The probe demonstrates high fluorogenic response upon reaction.
Conclusions:
- A novel fluorogenic probe integrating two-point binding and bioorthogonal click chemistry was successfully developed.
- This probe enables efficient and robust two-point labeling of small peptide tags.
- The findings present a valuable tool for chemical biology applications.
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