Difference between revisions of "Optical resolution"
From Online Dictionary of Crystallography
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| − | <font color="blue">Pouvoir de résolution</font> (''Fr'') | + | <font color="blue">Pouvoir de résolution</font> (''Fr''). <font color="red">Bildauflösung</font> (''Ge''). <font color="green">Resolución de imagen</font> (''Sp''). <font color="black">Risoluzione angolare</font> (''It''). <font color="purple">分解能</font> (''Ja''). |
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== History == | == History == | ||
| − | The term was introduced into the protein structure determination literature by Vaguine, A. A., Richelle, J. | + | The term was introduced into the protein structure determination literature by Vaguine, A. A., Richelle, J. and Wodak, S. J. [(1999). |
[http://dx.doi.org/10.1107/S0907444998006684 ''Acta Cryst.'' D'''55''', 191-205]. ''SFCHECK: a unified set of procedures for evaluating the quality of macromolecular structure-factor data and their agreement with the atomic model'']. | [http://dx.doi.org/10.1107/S0907444998006684 ''Acta Cryst.'' D'''55''', 191-205]. ''SFCHECK: a unified set of procedures for evaluating the quality of macromolecular structure-factor data and their agreement with the atomic model'']. | ||
[[Category:Biological crystallography]] | [[Category:Biological crystallography]] | ||
[[Category:Structure determination]] | [[Category:Structure determination]] | ||
Revision as of 10:28, 16 May 2017
Pouvoir de résolution (Fr). Bildauflösung (Ge). Resolución de imagen (Sp). Risoluzione angolare (It). 分解能 (Ja).
By analogy with optical observations, e.g. in astronomy, the term optical resolution in structure determination, [math]d_\mathrm{opt}[/math], is used to describe the expected minimum distance between two resolved peaks in an electron-density map.
[math]d_\mathrm{opt} = [2(\sigma_\mathrm{Patt}^2 + \sigma_\mathrm{sph}^2)]^{1/2}[/math]
where [math]\sigma_\mathrm{Patt}[/math] is the standard deviation of the Gaussian function fitted to the Patterson origin peak, [math]\sigma_\mathrm{sph}[/math] is the standard deviation of the Gaussian function fitted to the origin peak of the spherical interference function, representing the Fourier transform of a sphere with radius [math]1/d_\mathrm{min}[/math], and [math]d_\mathrm{min}[/math] is the nominal resolution.
History
The term was introduced into the protein structure determination literature by Vaguine, A. A., Richelle, J. and Wodak, S. J. [(1999). Acta Cryst. D55, 191-205. SFCHECK: a unified set of procedures for evaluating the quality of macromolecular structure-factor data and their agreement with the atomic model].