electronic reprint Journal of Applied Crystallography ISSN 0021-8898 Editor: Gernot Kostorz Structural refinement by restrained molecular-dynamics algorithm with small-angle X-ray scattering constraints for a biomolecule Masaki Kojima, Alexander A. Timchenko, Junichi Higo, Kazuki Ito, Hiroshi Kihara and Kenji Takahashi Copyright © International Union of Crystallography Author(s) of this paper may load this reprint on their own web site provided that this cover page is retained. Republication of this article or its storage in electronic databases or the like is not permitted without prior permission in writing from the IUCr. J. Appl. Cryst. (2004). 37, 103–109 Masaki Kojima et al. Molecular-dynamics algorithm