Related Experiment Video
Updated: Jun 25, 2026

CD Spectroscopy to Study DNA-Protein Interactions
Published on: February 10, 2022
Circular dichroism and conformational polymorphism of DNA
Jaroslav Kypr1, Iva Kejnovská, Daniel Renciuk
1Institute of Biophysics, vvi Academy of Sciences of the Czech Republic, Brno, Czech Republic. kypr@ibp.cz
Circular dichroic (CD) spectroscopy is a sensitive and versatile method for studying DNA structures. This review highlights its crucial role in understanding various DNA conformations, from B-family to quadruplexes.
Area of Science:
- Molecular Biology
- Biophysics
- Spectroscopy
Background:
- DNA exists in various conformational states, including B-form, A-form, Z-form, and G-quadruplexes.
- Understanding these DNA structures is crucial for various biological processes and drug development.
Purpose of the Study:
- To review the utility of circular dichroic (CD) spectroscopy in characterizing DNA conformational properties.
- To highlight the advantages and applications of CD spectroscopy in DNA structural analysis.
Main Methods:
- Circular dichroic (CD) spectroscopy is employed to analyze DNA conformations.
- Studies involving titration with various agents to induce conformational changes are reviewed.
Main Results:
- CD spectroscopy effectively distinguishes between different DNA structures like B-family, A-form, Z-form, and quadruplexes.
- The method allows for the study of gradual conformational changes and cooperative isomerizations.
- Kinetics and thermodynamic parameters of DNA conformer appearance can be determined.
Conclusions:
- CD spectroscopy is a sensitive, inexpensive, and versatile tool for mapping DNA conformational properties.
- Its numerous advantages have made it indispensable in fundamental DNA structural research.
More Related Videos
09:32Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
Published on: April 12, 2019
11:37Protocol for the Solid-phase Synthesis of Oligomers of RNA Containing a 2'-O-thiophenylmethyl Modification and Characterization via Circular Dichroism
Published on: July 28, 2017
Related Concept Videos
¹H NMR of Conformationally Flexible Molecules: Temporal Resolution
¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR
Stereoisomerism of Cyclic Compounds
Chair Conformation of Cyclohexane
The hydrogen atoms linked to carbons are arranged in two different axial and equatorial orientations to achieve this staggered...
Chirality in Nature
DNA as a Genetic Template