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3igc

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Current revision (07:47, 6 September 2023) (edit) (undo)
 
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<StructureSection load='3igc' size='340' side='right'caption='[[3igc]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
<StructureSection load='3igc' size='340' side='right'caption='[[3igc]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[3igc]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Varv Varv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3IGC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3IGC FirstGlance]. <br>
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<table><tr><td colspan='2'>[[3igc]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Variola_virus Variola virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3IGC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3IGC FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=VO4:VANADATE+ION'>VO4</scene></td></tr>
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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]] 2.1&#8491;</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">H6R, I6R, TOP1 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10255 VARV])</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=VO4:VANADATE+ION'>VO4</scene></td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/DNA_topoisomerase DNA topoisomerase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.99.1.2 5.99.1.2] </span></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=3igc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3igc OCA], [https://pdbe.org/3igc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3igc RCSB], [https://www.ebi.ac.uk/pdbsum/3igc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3igc ProSAT]</span></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=3igc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3igc OCA], [https://pdbe.org/3igc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3igc RCSB], [https://www.ebi.ac.uk/pdbsum/3igc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3igc ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[https://www.uniprot.org/uniprot/TOP1_VAR67 TOP1_VAR67]] 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 (By similarity).
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[https://www.uniprot.org/uniprot/TOP1_VAR67 TOP1_VAR67] 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 (By similarity).
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: DNA topoisomerase]]
 
[[Category: Large Structures]]
[[Category: Large Structures]]
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[[Category: Varv]]
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[[Category: Variola virus]]
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[[Category: Bushman, F D]]
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[[Category: Bushman FD]]
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[[Category: Duyne, G D.Van]]
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[[Category: Hwang Y]]
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[[Category: Hwang, Y]]
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[[Category: Perry K]]
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[[Category: Perry, K]]
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[[Category: Van Duyne GD]]
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[[Category: Atp-binding]]
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[[Category: Dna-binding]]
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[[Category: Isomerase]]
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[[Category: Isomerase-dna complex]]
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[[Category: Late protein]]
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[[Category: Nucleotide-binding]]
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[[Category: Poxvirus]]
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[[Category: Protein-dna complex]]
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[[Category: Topoisomerase]]
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Current revision

Smallpox virus topoisomerase-DNA transition state

PDB ID 3igc

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Proteopedia Page Contributors and Editors (what is this?)

OCA

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