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Phosphodiester Linkages

Phosphodiester Linkages

Overview
Phosphodiester bond forms when a phosphoric acid molecule (H3PO4) links with two hydroxyl groups (–OH) of two other molecules, forming two ester bonds. Two water molecules are released in this process. The phosphodiester bond is commonly found in nucleic acids (DNA and RNA) and plays a critical role in their structure and function.
Phosphodiester Bonds Link Nucleotides Together
DNA and RNA are polynucleotides or long chains of nucleotides that are linked together. A nucleotide is...

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Updated: May 17, 2025

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids

Published on: September 21, 2017

Triggerless Bio-Orthogonal Proximity-Induced PNA Ligation Using 2,5-Dioxopentanyl (DOP) Functionality.

Alex Manicardi¹, Annemieke Madder²

¹Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy. alex.manicardi@unipr.it.

Methods in Molecular Biology (Clifton, N.J.)

|April 2, 2025

Summary

This summary is machine-generated.

Peptide nucleic acids (PNAs) enable stable nanostructure construction. This study details methods for bio-orthogonal PNA ligation, enhancing their use in nanotechnology and molecular biology applications.

Keywords:

Bio-orthogonal reaction PNA Surface ligation reaction Templated reaction Urea-SDS PAGE

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Area of Science:

Nanotechnology and Materials Science
Biochemistry and Molecular Biology
Synthetic Chemistry

Background:

Peptide nucleic acids (PNAs) offer DNA-like self-assembly with superior stability and chemical versatility.
Templated ligation is crucial for stabilizing PNA nanostructures.
Bio-orthogonal ligation methods are preferred for compatibility with biological systems.

Purpose of the Study:

To outline design requirements for triggerless bio-orthogonal PNA ligation.
To provide protocols for PNA ligation in solution and on surfaces.
To establish an electrophoretic method for monitoring PNA ligation outcomes.

Main Methods:

Development of design principles for bio-orthogonal PNA ligation.
Implementation of ligation protocols in aqueous solution.
Adaptation of ligation protocols for immobilization on glass surfaces.
Establishment of gel electrophoresis for reaction monitoring.

Main Results:

Successful demonstration of triggerless bio-orthogonal PNA ligation.
Validation of ligation efficiency in solution and on solid supports.
Development of a reliable electrophoretic assay for assessing ligation success.

Conclusions:

Triggerless bio-orthogonal PNA ligation is a viable and efficient method for nanostructure construction.
The described protocols facilitate the use of PNAs in diverse applications, including those involving biological systems.
Electrophoretic monitoring provides a robust means to evaluate PNA ligation reactions.