7auc
From Proteopedia
(Difference between revisions)
| Line 1: | Line 1: | ||
==Crystal structure of an engineered helicase domain construct for human Bloom syndrome protein (BLM)== | ==Crystal structure of an engineered helicase domain construct for human Bloom syndrome protein (BLM)== | ||
| - | <StructureSection load='7auc' size='340' side='right'caption='[[7auc]]' scene=''> | + | <StructureSection load='7auc' size='340' side='right'caption='[[7auc]], [[Resolution|resolution]] 1.53Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7AUC OCA]. For a <b>guided tour on the structure components</b> use [ | + | <table><tr><td colspan='2'>[[7auc]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7AUC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7AUC FirstGlance]. <br> |
| - | </td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BLM, RECQ2, RECQL3 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=7auc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7auc OCA], [https://pdbe.org/7auc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7auc RCSB], [https://www.ebi.ac.uk/pdbsum/7auc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7auc ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| + | == Disease == | ||
| + | [[https://www.uniprot.org/uniprot/BLM_HUMAN BLM_HUMAN]] Bloom syndrome. The disease is caused by mutations affecting the gene represented in this entry. | ||
| + | == Function == | ||
| + | [[https://www.uniprot.org/uniprot/BLM_HUMAN BLM_HUMAN]] Participates in DNA replication and repair. Exhibits a magnesium-dependent ATP-dependent DNA-helicase activity that unwinds single- and double-stranded DNA in a 3'-5' direction. Involved in 5'-end resection of DNA during double-strand break (DSB) repair: unwinds DNA and recruits DNA2 which mediates the cleavage of 5'-ssDNA. Negatively regulates sister chromatid exchange (SCE).<ref>PMID:9388193</ref> <ref>PMID:12019152</ref> <ref>PMID:21325134</ref> <ref>PMID:23509288</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | BLM (Bloom syndrome protein) is a RECQ-family helicase involved in the dissolution of complex DNA structures and repair intermediates. Synthetic lethality analysis implicates BLM as a promising target in a range of cancers with defects in the DNA damage response; however, selective small molecule inhibitors of defined mechanism are currently lacking. Here, we identify and characterise a specific inhibitor of BLM's ATPase-coupled DNA helicase activity, by allosteric trapping of a DNA-bound translocation intermediate. Crystallographic structures of BLM-DNA-ADP-inhibitor complexes identify a hitherto unknown interdomain interface, whose opening and closing are integral to translocation of ssDNA, and which provides a highly selective pocket for drug discovery. Comparison with structures of other RECQ helicases provides a model for branch migration of Holliday junctions by BLM. | ||
| + | |||
| + | Uncovering an allosteric mode of action for a selective inhibitor of human Bloom syndrome protein.,Chen X, Ali YI, Fisher CE, Arribas-Bosacoma R, Rajasekaran MB, Williams G, Walker S, Booth JR, Hudson JJ, Roe SM, Pearl LH, Ward SE, Pearl FM, Oliver AW Elife. 2021 Mar 1;10. pii: 65339. doi: 10.7554/eLife.65339. PMID:33647232<ref>PMID:33647232</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 7auc" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| + | [[Category: Human]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
| - | [[Category: Chen X]] | + | [[Category: Chen, X]] |
| - | [[Category: Oliver | + | [[Category: Oliver, A W]] |
| + | [[Category: Blm]] | ||
| + | [[Category: Dna repair]] | ||
| + | [[Category: Helicase]] | ||
| + | [[Category: Nuclear protein]] | ||
| + | [[Category: Recq]] | ||
Revision as of 06:57, 17 March 2021
Crystal structure of an engineered helicase domain construct for human Bloom syndrome protein (BLM)
| |||||||||||
Categories: Human | Large Structures | Chen, X | Oliver, A W | Blm | Dna repair | Helicase | Nuclear protein | Recq
