2by3

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[[Image:2by3.gif|left|200px]]<br />
 
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<applet load="2by3" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="2by3, resolution 1.50&Aring;" />
 
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'''IS RADIATION DAMAGE DEPENDENT ON THE DOSE-RATE USED DURING MACROMOLECULAR CRYSTALLOGRAPHY DATA COLLECTION'''<br />
 
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==Overview==
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==Is radiation damage dependent on the dose-rate used during macromolecular crystallography data collection==
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This paper focuses on the radiation-damage effects when applying the same, total X-ray dose to protein crystals at different dose rates. These, experiments have been performed on both a selenomethionated protein and on, bovine trypsin using dose rates that span nearly two orders of magnitude., The results show no clear dose-rate effect on the global indicators of, radiation damage, but a small measurable dose-rate effect could be found, when studying specific radiation damage. It is hypothesized that this, observed dose-rate effect relates to differences in the steady-state, free-radical concentration.
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<StructureSection load='2by3' size='340' side='right'caption='[[2by3]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2by3]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Deinococcus_radiodurans_R1 Deinococcus radiodurans R1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BY3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BY3 FirstGlance]. <br>
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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]] 1.5&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene>, <scene name='pdbligand=GLC:ALPHA-D-GLUCOSE'>GLC</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=PRD_900006:trehalose'>PRD_900006</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene></td></tr>
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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=2by3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2by3 OCA], [https://pdbe.org/2by3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2by3 RCSB], [https://www.ebi.ac.uk/pdbsum/2by3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2by3 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/TREZ_DEIRA TREZ_DEIRA]
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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/by/2by3_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=2by3 ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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This paper focuses on the radiation-damage effects when applying the same total X-ray dose to protein crystals at different dose rates. These experiments have been performed on both a selenomethionated protein and on bovine trypsin using dose rates that span nearly two orders of magnitude. The results show no clear dose-rate effect on the global indicators of radiation damage, but a small measurable dose-rate effect could be found when studying specific radiation damage. It is hypothesized that this observed dose-rate effect relates to differences in the steady-state free-radical concentration.
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==About this Structure==
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Is radiation damage dependent on the dose rate used during macromolecular crystallography data collection?,Leiros HK, Timmins J, Ravelli RB, McSweeney SM Acta Crystallogr D Biol Crystallogr. 2006 Feb;62(Pt 2):125-32. Epub 2006, Jan 18. PMID:16421442<ref>PMID:16421442</ref>
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2BY3 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Deinococcus_radiodurans Deinococcus radiodurans] with GLC, MG, TRS, TRE and BME as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Alpha-amylase Alpha-amylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.1 3.2.1.1] Structure known Active Site: AC1. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2BY3 OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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Is radiation damage dependent on the dose rate used during macromolecular crystallography data collection?, Leiros HK, Timmins J, Ravelli RB, McSweeney SM, Acta Crystallogr D Biol Crystallogr. 2006 Feb;62(Pt 2):125-32. Epub 2006, Jan 18. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=16421442 16421442]
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</div>
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[[Category: Alpha-amylase]]
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<div class="pdbe-citations 2by3" style="background-color:#fffaf0;"></div>
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[[Category: Deinococcus radiodurans]]
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== References ==
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[[Category: Single protein]]
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<references/>
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[[Category: Leiros, H.K.S.]]
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__TOC__
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[[Category: Mcsweeney, S.M.]]
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</StructureSection>
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[[Category: Ravelli, R.B.G.]]
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[[Category: Deinococcus radiodurans R1]]
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[[Category: Timmins, J.]]
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[[Category: Large Structures]]
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[[Category: BME]]
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[[Category: Leiros H-KS]]
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[[Category: GLC]]
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[[Category: McSweeney SM]]
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[[Category: MG]]
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[[Category: Ravelli RBG]]
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[[Category: TRE]]
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[[Category: Timmins J]]
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[[Category: TRS]]
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[[Category: data collection]]
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[[Category: dose-rate]]
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[[Category: hydrolase]]
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[[Category: radiation damage]]
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[[Category: synchrotron radiation]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 5 14:23:47 2007''
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Current revision

Is radiation damage dependent on the dose-rate used during macromolecular crystallography data collection

PDB ID 2by3

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