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Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
Published on: September 21, 2017
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Calorimetry of Nucleic Acids.
Eriks Rozners1, Daniel S Pilch2, Martin Egli3
1Department of Chemistry, Binghamton University, State University of New York, Binghamton, New York.
Current Protocols in Nucleic Acid Chemistry
|December 2, 2015
Summary
Calorimetry, including differential scanning (DSC) and isothermal titration (ITC), characterizes nucleic acid thermodynamics. These methods quantify binding and melting transitions, providing crucial thermodynamic parameters for nucleic acid studies.
Area of Science:
- Biophysical Chemistry
- Molecular Biology
- Thermodynamics
Background:
- Understanding nucleic acid thermodynamics is crucial for molecular biology.
- Calorimetric techniques offer precise thermodynamic characterization.
Purpose of the Study:
- To describe the application of calorimetry for nucleic acid thermodynamics.
- To detail differential scanning calorimetry (DSC) and isothermal titration calorimetry (ITC) methodologies.
Main Methods:
- Differential Scanning Calorimetry (DSC) measures heat capacity changes with temperature to analyze nucleic acid order-disorder transitions.
- Isothermal Titration Calorimetry (ITC) monitors heat changes during nucleic acid hybridization at constant temperature.
Main Results:
- DSC provides transition enthalpy, entropy, free energy, heat capacity, transition state, and melting unit size.
- ITC determines association stoichiometry, enthalpy, equilibrium constant, and free energy of nucleic acid hybridization.
Conclusions:
- Both DSC and ITC are powerful tools for characterizing nucleic acid thermodynamics.
- These methods yield comprehensive thermodynamic data essential for understanding nucleic acid behavior.
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