3we3

From Proteopedia

(Difference between revisions)

Revision as of 00:49, 5 August 2016

Structure of BLM RQC domain bound to an arsenate ion

Structural highlights

3we3 is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	3we2
Gene:	BLM (HUMAN)
Activity:	DNA helicase, with EC number 3.6.4.12
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[BLM_HUMAN] Bloom syndrome. The disease is caused by mutations affecting the gene represented in this entry.

Function

[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).^[1] ^[2] ^[3] ^[4]

Publication Abstract from PubMed

Bloom syndrome is a rare genetic disorder characterized by genomic instability and cancer predisposition. The disease is caused by mutations of the Bloom syndrome protein (BLM). Here we report the crystal structure of a RecQ C-terminal (RQC) domain from human BLM. The structure reveals three novel features of BLM RQC which distinguish it from the previous structures of the Werner syndrome protein (WRN) and RECQ1. First, BLM RQC lacks an aromatic residue at the tip of the beta-wing, a key element of the RecQ-family helicases used for DNA-strand separation. Second, a BLM-specific insertion between the N-terminal helices exhibits a looping-out structure that extends at right angles to the beta-wing. Deletion mutagenesis of this insertion interfered with binding to Holliday junction. Third, the C-terminal region of BLM RQC adopts an extended structure running along the domain surface, which may facilitate the spatial positioning of an HRDC domain in the full-length protein.

Structure of the RecQ C-terminal Domain of Human Bloom Syndrome Protein.,Kim SY, Hakoshima T, Kitano K Sci Rep. 2013 Nov 21;3:3294. doi: 10.1038/srep03294. PMID:24257077^[5]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Karow JK, Chakraverty RK, Hickson ID. The Bloom's syndrome gene product is a 3'-5' DNA helicase. J Biol Chem. 1997 Dec 5;272(49):30611-4. PMID:9388193
↑ Langland G, Elliott J, Li Y, Creaney J, Dixon K, Groden J. The BLM helicase is necessary for normal DNA double-strand break repair. Cancer Res. 2002 May 15;62(10):2766-70. PMID:12019152
↑ Nimonkar AV, Genschel J, Kinoshita E, Polaczek P, Campbell JL, Wyman C, Modrich P, Kowalczykowski SC. BLM-DNA2-RPA-MRN and EXO1-BLM-RPA-MRN constitute two DNA end resection machineries for human DNA break repair. Genes Dev. 2011 Feb 15;25(4):350-62. doi: 10.1101/gad.2003811. PMID:21325134 doi:http://dx.doi.org/10.1101/gad.2003811
↑ Wan L, Han J, Liu T, Dong S, Xie F, Chen H, Huang J. Scaffolding protein SPIDR/KIAA0146 connects the Bloom syndrome helicase with homologous recombination repair. Proc Natl Acad Sci U S A. 2013 Jun 25;110(26):10646-51. doi:, 10.1073/pnas.1220921110. Epub 2013 Mar 18. PMID:23509288 doi:http://dx.doi.org/10.1073/pnas.1220921110
↑ Kim SY, Hakoshima T, Kitano K. Structure of the RecQ C-terminal Domain of Human Bloom Syndrome Protein. Sci Rep. 2013 Nov 21;3:3294. doi: 10.1038/srep03294. PMID:24257077 doi:http://dx.doi.org/10.1038/srep03294

1 Structural highlights
2 Disease
3 Function
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3we3"

@@ Line 1: / Line 1: @@
 ==Structure of BLM RQC domain bound to an arsenate ion==
 <StructureSection load='3we3' size='340' side='right' caption='[[3we3]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
@@ Line 7: / Line 8: @@
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BLM ([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_helicase DNA helicase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.4.12 3.6.4.12] </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=3we3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3we3 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3we3 RCSB], [http://www.ebi.ac.uk/pdbsum/3we3 PDBsum]</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=3we3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3we3 OCA], [http://pdbe.org/3we3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3we3 RCSB], [http://www.ebi.ac.uk/pdbsum/3we3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3we3 ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 21: / Line 22: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3we3" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

3we3

From Proteopedia

Revision as of 00:49, 5 August 2016

Structure of BLM RQC domain bound to an arsenate ion

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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