Global radiation damage : temperature dependence, time dependence and how to outrun it

A series of studies that provide a consistent and illuminating picture of global radiation damage to protein crystals, especially at temperatures above ∼200 K, are described. The radiation sensitivity shows a transition near 200 K, above which it appears to be limited by solvent-coupled diffusive pr...

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Veröffentlicht in:Journal of synchrotron radiation. - 1994. - 20(2013), Pt 1 vom: 01. Jan., Seite 7-13
1. Verfasser: Warkentin, Matthew (VerfasserIn)
Weitere Verfasser: Hopkins, Jesse B, Badeau, Ryan, Mulichak, Anne M, Keefe, Lisa J, Thorne, Robert E
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Journal of synchrotron radiation
Schlagworte:Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Plant Proteins Proteins thaumatin protein, plant 53850-34-3
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520 |a A series of studies that provide a consistent and illuminating picture of global radiation damage to protein crystals, especially at temperatures above ∼200 K, are described. The radiation sensitivity shows a transition near 200 K, above which it appears to be limited by solvent-coupled diffusive processes. Consistent with this interpretation, a component of global damage proceeds on timescales of several minutes at 180 K, decreasing to seconds near room temperature. As a result, data collection times of order 1 s allow up to half of global damage to be outrun at 260 K. Much larger damage reductions near room temperature should be feasible using larger dose rates delivered using microfocused beams, enabling a significant expansion of structural studies of proteins under more nearly native conditions 
650 4 |a Journal Article 
650 4 |a Research Support, N.I.H., Extramural 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Research Support, U.S. Gov't, Non-P.H.S. 
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700 1 |a Hopkins, Jesse B  |e verfasserin  |4 aut 
700 1 |a Badeau, Ryan  |e verfasserin  |4 aut 
700 1 |a Mulichak, Anne M  |e verfasserin  |4 aut 
700 1 |a Keefe, Lisa J  |e verfasserin  |4 aut 
700 1 |a Thorne, Robert E  |e verfasserin  |4 aut 
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