5zen
From Proteopedia
(Difference between revisions)
| Line 3: | Line 3: | ||
<StructureSection load='5zen' size='340' side='right' caption='[[5zen]], [[Resolution|resolution]] 2.75Å' scene=''> | <StructureSection load='5zen' size='340' side='right' caption='[[5zen]], [[Resolution|resolution]] 2.75Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[5zen]] is a 3 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5ZEN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5ZEN FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5zen]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5ZEN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5ZEN FirstGlance]. <br> |
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene></td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TOP2B ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/DNA_topoisomerase_(ATP-hydrolyzing) DNA topoisomerase (ATP-hydrolyzing)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.99.1.3 5.99.1.3] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/DNA_topoisomerase_(ATP-hydrolyzing) DNA topoisomerase (ATP-hydrolyzing)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.99.1.3 5.99.1.3] </span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5zen FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5zen OCA], [http://pdbe.org/5zen PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5zen RCSB], [http://www.ebi.ac.uk/pdbsum/5zen PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5zen ProSAT]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5zen FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5zen OCA], [http://pdbe.org/5zen PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5zen RCSB], [http://www.ebi.ac.uk/pdbsum/5zen PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5zen ProSAT]</span></td></tr> | ||
| Line 10: | Line 11: | ||
== Function == | == Function == | ||
[[http://www.uniprot.org/uniprot/TOP2B_HUMAN TOP2B_HUMAN]] Control of topological states of DNA by transient breakage and subsequent rejoining of DNA strands. Topoisomerase II makes double-strand breaks. Indirectly involved in vitamin D-coupled transcription regulation via its association with the WINAC complex, a chromatin-remodeling complex recruited by vitamin D receptor (VDR), which is required for the ligand-bound VDR-mediated transrepression of the CYP27B1 gene.<ref>PMID:10684600</ref> <ref>PMID:12837248</ref> | [[http://www.uniprot.org/uniprot/TOP2B_HUMAN TOP2B_HUMAN]] Control of topological states of DNA by transient breakage and subsequent rejoining of DNA strands. Topoisomerase II makes double-strand breaks. Indirectly involved in vitamin D-coupled transcription regulation via its association with the WINAC complex, a chromatin-remodeling complex recruited by vitamin D receptor (VDR), which is required for the ligand-bound VDR-mediated transrepression of the CYP27B1 gene.<ref>PMID:10684600</ref> <ref>PMID:12837248</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Type IIA topoisomerases (Top2s) manipulate the handedness of DNA crossovers by introducing a transient and protein-linked double-strand break in one DNA duplex, termed the DNA-gate, whose opening allows another DNA segment to be transported through to change the DNA topology. Despite the central importance of this gate-opening event to Top2 function, the DNA-gate in all reported structures of Top2-DNA complexes is in the closed state. Here we present the crystal structure of a human Top2 DNA-gate in an open conformation, which not only reveals structural characteristics of its DNA-conducting path, but also uncovers unexpected yet functionally significant conformational changes associated with gate-opening. This structure further implicates Top2's preference for a left-handed DNA braid and allows the construction of a model representing the initial entry of another DNA duplex into the DNA-gate. Steered molecular dynamics calculations suggests the Top2-catalyzed DNA passage may be achieved by a rocker-switch-type movement of the DNA-gate. | ||
| + | |||
| + | Structural insights into the gating of DNA passage by the topoisomerase II DNA-gate.,Chen SF, Huang NL, Lin JH, Wu CC, Wang YR, Yu YJ, Gilson MK, Chan NL Nat Commun. 2018 Aug 6;9(1):3085. doi: 10.1038/s41467-018-05406-y. PMID:30082834<ref>PMID:30082834</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 5zen" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| + | [[Category: Human]] | ||
[[Category: Chan, N L]] | [[Category: Chan, N L]] | ||
[[Category: Chen, S F]] | [[Category: Chen, S F]] | ||
Revision as of 16:35, 15 August 2018
Crystal structure of human topoisomerase II beta in complex with DNA: a new quaternary conformation showing opening of the protein-linked DNA-gate
| |||||||||||
