2a7a

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[[Image:2a7a.gif|left|200px]]
 
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{{Structure
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==On the Routine Use of Soft X-Rays in Macromolecular Crystallography, Part III- The Optimal Data Collection Wavelength==
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|PDB= 2a7a |SIZE=350|CAPTION= <scene name='initialview01'>2a7a</scene>, resolution 1.75&Aring;
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<StructureSection load='2a7a' size='340' side='right'caption='[[2a7a]], [[Resolution|resolution]] 1.75&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene> and <scene name='pdbligand=XE:XENON'>XE</scene>
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<table><tr><td colspan='2'>[[2a7a]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Canavalia_cathartica Canavalia cathartica]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2A7A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2A7A FirstGlance]. <br>
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|ACTIVITY=
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.75&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=XE:XENON'>XE</scene></td></tr>
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}}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2a7a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2a7a OCA], [https://pdbe.org/2a7a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2a7a RCSB], [https://www.ebi.ac.uk/pdbsum/2a7a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2a7a ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/CONA_CANCT CONA_CANCT] Glucose/D-mannose specific lectin.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/a7/2a7a_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2a7a ConSurf].
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<div style="clear:both"></div>
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'''On the Routine Use of Soft X-Rays in Macromolecular Crystallography, Part III- The Optimal Data Collection Wavelength'''
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==See Also==
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*[[Concanavalin 3D structures|Concanavalin 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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Complete and highly redundant data sets were collected at different wavelengths between 0.80 and 2.65 A for a total of ten different protein and DNA model systems. The magnitude of the anomalous signal-to-noise ratio as assessed by the quotient R(anom)/R(r.i.m.) was found to be influenced by the data-collection wavelength and the nature of the anomalously scattering substructure. By utilizing simple empirical correlations, for instance between the estimated deltaF/F and the expected R(anom) or the data-collection wavelength and the expected R(r.i.m.), the wavelength at which the highest anomalous signal-to-noise ratio can be expected could be estimated even before the experiment. Almost independent of the nature of the anomalously scattering substructure and provided that no elemental X-ray absorption edge is nearby, this optimal wavelength is 2.1 A.
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[[Category: Canavalia cathartica]]
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[[Category: Large Structures]]
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==About this Structure==
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[[Category: Mueller-Dieckmann C]]
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2A7A is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Canavalia_virosa Canavalia virosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2A7A OCA].
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[[Category: Panjikar S]]
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[[Category: Tucker PA]]
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==Reference==
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[[Category: Weiss MS]]
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On the routine use of soft X-rays in macromolecular crystallography. Part III. The optimal data-collection wavelength., Mueller-Dieckmann C, Panjikar S, Tucker PA, Weiss MS, Acta Crystallogr D Biol Crystallogr. 2005 Sep;61(Pt 9):1263-72. Epub 2005, Aug 16. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16131760 16131760]
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[[Category: Canavalia virosa]]
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[[Category: Single protein]]
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[[Category: Mueller-Dieckmann, C.]]
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[[Category: Panjikar, S.]]
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[[Category: Tucker, P A.]]
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[[Category: Weiss, M S.]]
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[[Category: CA]]
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[[Category: MN]]
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[[Category: XE]]
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[[Category: lectin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 15:46:14 2008''
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Current revision

On the Routine Use of Soft X-Rays in Macromolecular Crystallography, Part III- The Optimal Data Collection Wavelength

PDB ID 2a7a

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