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Updated: Jun 21, 2026

Analyzing and Building Nucleic Acid Structures with 3DNA
Published on: April 26, 2013
Conformational analysis of nucleic acids revisited: Curves+
R Lavery1, M Moakher, J H Maddocks
1Institut de Biologie et Chimie des Protéines, CNRS UMR 5086/Université de Lyon, 7 Passage du Vercors, 69367 Lyon, France. richard.lavery@ibcp.fr
Curves+ is a faster nucleic acid analysis program for structures with up to four strands. It provides detailed helical and backbone parameters, groove analysis, and can analyze molecular dynamics trajectories.
Area of Science:
- Structural Biology
- Bioinformatics
- Computational Chemistry
Background:
- Accurate analysis of nucleic acid conformation is crucial for understanding their function.
- Existing tools may be computationally intensive or limited in scope.
- There is a need for efficient and versatile software for nucleic acid structural analysis.
Purpose of the Study:
- To introduce Curves+, a novel computational program for nucleic acid conformational analysis.
- To provide a faster and more versatile alternative to previous methods.
- To enable detailed analysis of complex nucleic acid structures and dynamics.
Main Methods:
- Development of the Curves+ program utilizing algorithmic simplifications.
- Implementation of helical and backbone parameter calculations, including curvilinear axis and base positioning.
- Integration of groove width and depth analysis.
- Capability to analyze molecular dynamics trajectories and utilize the Canal program for graphical output.
Main Results:
- Curves+ offers significantly improved computational speed compared to earlier approaches.
- The program accurately analyzes a wide range of nucleic acid structures (up to four strands, modified bases/backbones).
- Comprehensive helical and backbone parameters, groove dimensions, and base positioning relative to the axis are provided.
- Analysis of molecular dynamics trajectories is supported, with graphical outputs available via Canal.
Conclusions:
- Curves+ is an efficient and versatile tool for detailed nucleic acid conformational analysis.
- It facilitates the study of both static structures and dynamic processes in nucleic acids.
- The program enhances the capabilities for structural biologists and bioinformaticians.
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