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Slow-cooling protocols for crystallographic refinement by simulated annealing

Brünger, A. T., Krukowski, A., Erickson, J. W.·1990·Acta Crystallographica Section A Foundations of Crystallography

Abstract

An improved protocol for crystallographic refinement by simulated annealing is presented. It consists of slow cooling starting at high temperatures. Tests of refinements of aspartate aminotransferase and procin pepsin show that the slow-cooling protocol produces lower R factors and better geometry than other protocols previously published. The influence of the temperature-control method, weighting, cooling rate and duration of the heating stage on the success of the slow-cooling protocol is studied. Analysis of the time course of the potential-energy fluctuations indicates no global changes in the state of order of the system. Fluctuations of the potential energy are interpreted as localized conformational changes during the course of the refinement.

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Metadata

Authors
Brünger, A. T., Krukowski, A., & Erickson, J. W.
Venue
Acta Crystallographica Section A Foundations of Crystallography
Published
1990-07-01
Volume
46
Issue
7
Pages
585-593
ISSN
0108-7673 (ISSN-L)
OpenAlex
W2060448324
Cited by
517
References
0
FWCI
21.25
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Slow-cooling protocols for crystallographic refinement by simulated annealing. https://app.cochat.ai/papers/10.1107/s0108767390002355
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Brünger, A. T., Krukowski, A., & Erickson, J. W. (1990). Slow-cooling protocols for crystallographic refinement by simulated annealing. Acta Crystallographica Section A Foundations of Crystallography. https://doi.org/10.1107/s0108767390002355

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