Nucleic Acids Research Advance Access originally published online on July 22, 2009
Nucleic Acids Research 2009 37(17):5917-5929; doi:10.1093/nar/gkp608
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Nucleic Acids Research, 2009, Vol. 37, No. 17 5917-5929
© 2009 The Author(s)
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Structural Biology |
Conformational analysis of nucleic acids revisited: Curves+
1Institut de Biologie et Chimie des Protéines, CNRS UMR 5086/Université de Lyon, 7 Passage du Vercors, 69367 Lyon, France, 2Laboratoire de Modélisation Mathématique et Numérique dans les Sciences de l'Ingénieur, Ecole Nationale d'Ingénieurs de Tunis, B.P. 37, 1002 Tunis-Belvédère, Tunisia and 3Institut de Mathématiques B, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland
*To whom correspondence should be addressed. Tel: +33 4 72 72 26 37; Fax: +33 4 72 72 26 04; Email: richard.lavery{at}ibcp.fr Correspondence may also be addressed to K. Zakrzewska. Tel: +33 4 72 72 26 37; Fax: +33 4 72 72 26 04; Email: krystyna.zakrzewska{at}ibcp.fr
Received April 22, 2009. Revised July 5, 2009. Accepted July 6, 2009.
We describe Curves+, a new nucleic acid conformational analysis program which is applicable to a wide range of nucleic acid structures, including those with up to four strands and with either canonical or modified bases and backbones. The program is algorithmically simpler and computationally much faster than the earlier Curves approach, although it still provides both helical and backbone parameters, including a curvilinear axis and parameters relating the position of the bases to this axis. It additionally provides a full analysis of groove widths and depths. Curves+ can also be used to analyse molecular dynamics trajectories. With the help of the accompanying program Canal, it is possible to produce a variety of graphical output including parameter variations along a given structure and time series or histograms of parameter variations during dynamics.
The authors wish it to be known that, in their opinion, the first and the last authors should be regarded as joint First Authors.
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