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1a41
From Proteopedia
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| - | [[Image:1a41.png|left|200px]] | ||
| - | + | ==TYPE 1-TOPOISOMERASE CATALYTIC FRAGMENT FROM VACCINIA VIRUS== | |
| - | + | <StructureSection load='1a41' size='340' side='right'caption='[[1a41]], [[Resolution|resolution]] 2.30Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | + | <table><tr><td colspan='2'>[[1a41]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Vaccinia_virus Vaccinia virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A41 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1A41 FirstGlance]. <br> | |
| - | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3Å</td></tr> | |
| - | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | |
| - | == | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1a41 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a41 OCA], [https://pdbe.org/1a41 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1a41 RCSB], [https://www.ebi.ac.uk/pdbsum/1a41 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1a41 ProSAT]</span></td></tr> |
| - | [[1a41]] is a 1 chain structure with sequence from [ | + | </table> |
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/TOP1_VACCW TOP1_VACCW] Releases the supercoiling and torsional tension of DNA introduced during the DNA replication and transcription by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at the specific target site 5'-[CT]CCTTp site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA-(3'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 5'-OH DNA strand. The free DNA strand then undergoes passage around the unbroken strand thus removing DNA supercoils. Finally, in the religation step, the DNA 5'-OH attacks the covalent intermediate to expel the active-site tyrosine and restore the DNA phosphodiester backbone.<ref>PMID:16669621</ref> <ref>PMID:20187656</ref> | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/a4/1a41_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </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=1a41 ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
==See Also== | ==See Also== | ||
| - | *[[Topoisomerase|Topoisomerase]] | + | *[[Topoisomerase 3D structures|Topoisomerase 3D structures]] |
| - | + | == References == | |
| - | == | + | <references/> |
| - | < | + | __TOC__ |
| - | [[Category: | + | </StructureSection> |
| + | [[Category: Large Structures]] | ||
[[Category: Vaccinia virus]] | [[Category: Vaccinia virus]] | ||
| - | [[Category: Cheng | + | [[Category: Cheng C]] |
| - | [[Category: Kussie | + | [[Category: Kussie P]] |
| - | [[Category: Pavletich | + | [[Category: Pavletich N]] |
| - | [[Category: Shuman | + | [[Category: Shuman S]] |
| - | + | ||
| - | + | ||
Current revision
TYPE 1-TOPOISOMERASE CATALYTIC FRAGMENT FROM VACCINIA VIRUS
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