A grid-enabled web service for low-resolution crystal structure refinement

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Abstract

Deformable elastic network (DEN) restraints have proved to be a powerful tool for refining structures from low-resolution X-ray crystallographic data sets. Unfortunately, optimal refinement using DEN restraints requires extensive calculations and is often hindered by a lack of access to sufficient computational resources. The DEN web service presented here intends to provide structural biologists with access to resources for running computationally intensive DEN refinements in parallel on the Open Science Grid, the US cyberinfrastructure. Access to the grid is provided through a simple and intuitive web interface integrated into the SBGrid Science Portal. Using this portal, refinements combined with full parameter optimization that would take many thousands of hours on standard computational resources can now be completed in several hours. An example of the successful application of DEN restraints to the human Notch1 transcriptional complex using the grid resource, and summaries of all submitted refinements, are presented as justification. © 2012 International Union of Crystallography Printed in Singapore - all rights reserved.

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Odonovan, D. J., Stokes-Rees, I., Nam, Y., Blacklow, S. C., Schröder, G. F., Brunger, A. T., & Sliz, P. (2012). A grid-enabled web service for low-resolution crystal structure refinement. Acta Crystallographica Section D: Biological Crystallography, 68(3), 261–267. https://doi.org/10.1107/S0907444912001163

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