Related Experiment Video
Updated: May 31, 2026

09:06
Efficient and Site-specific Antibody Labeling by Strain-promoted Azide-alkyne Cycloaddition
Published on: December 23, 2016
Bioconjugation via azide-Staudinger ligation: an overview.
Christine I Schilling1, Nicole Jung, Moritz Biskup
1Institute of Organic Chemistry, Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany.
Chemical Society Reviews
|June 21, 2011
Summary
This review compares bioconjugation methods employing organic azides, emphasizing chemical ligation reactions and their significant utility in chemical biology research.
Area of Science:
- Organic Chemistry
- Chemical Biology
- Biotechnology
Background:
- Bioconjugation is crucial for linking molecules in biological systems.
- Organic azides offer versatile reactivity for bioconjugation.
- Chemical ligation provides efficient and specific molecular connections.
Purpose of the Study:
- To critically review and compare bioconjugation techniques utilizing organic azides.
- To highlight the applications of chemical ligation in chemical biology.
- To provide a comprehensive resource for researchers in the field.
Main Methods:
- Literature review of scientific publications on organic azide bioconjugation.
- Analysis of chemical ligation strategies and their reaction mechanisms.
- Evaluation of reported applications in chemical biology.
Main Results:
- Organic azides enable diverse bioconjugation strategies.
- Chemical ligation reactions offer high efficiency and selectivity.
- Numerous applications in chemical biology have been demonstrated using these methods.
Conclusions:
- Bioconjugation with organic azides, particularly via chemical ligation, is a powerful tool in chemical biology.
- Continued development of these techniques will advance biological research and drug discovery.
- This review consolidates key findings and future directions.
Related Concept Videos
Phase II Conjugation Reactions: Overview
Conjugation, a key component of phase II biotransformation reactions, is a vital process in drug detoxification. It involves transferring endogenous substances like glucuronic acid, sulfate, and glycine to drugs or their metabolites formed in phase I reactions. These conjugation reactions, often catalyzed by specific enzymes, transform potentially harmful metabolites into inactive, water-soluble forms easily excreted in urine or bile. By enhancing polarity and eliminating pharmacological...
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para position.
Mechanism of Conjugation
Bacterial conjugation is a mechanism of horizontal gene transfer that enables the exchange of genetic material between bacterial cells through direct contact. This process is facilitated by a donor cell carrying a conjugative plasmid, which encodes genes necessary for pilus formation, DNA replication, and transfer. The conjugative plasmid plays a central role in initiating and executing the transfer of genetic material.The tra region of the conjugative plasmid encodes proteins responsible for...
Preparation of 1° Amines: Azide Synthesis
Direct alkylation of ammonia produces polyalkylated amines, along with a quaternary ammonium salt. To exclusively prepare primary amines, the azide synthesis method can be used.
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...
Ligand Binding and Linkage
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence the...

