View source for 4bxo


==Architecture and DNA recognition elements of the Fanconi anemia FANCM- FAAP24 complex==
<StructureSection load='4bxo' size='340' side='right'caption='[[4bxo]], [[Resolution|resolution]] 2.15&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4bxo]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4BXO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4BXO 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]] 2.15&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</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=4bxo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4bxo OCA], [https://pdbe.org/4bxo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4bxo RCSB], [https://www.ebi.ac.uk/pdbsum/4bxo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4bxo ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/FANCM_HUMAN FANCM_HUMAN] Fanconi anemia. The disease is caused by mutations affecting the gene represented in this entry.
== Function ==
[https://www.uniprot.org/uniprot/FANCM_HUMAN FANCM_HUMAN] ATPase required for FANCD2 ubiquitination, a key reaction in DNA repair. Binds to ssDNA but not to dsDNA. Recruited to forks stalled by DNA interstrand cross-links, and required for cellular resistance to such lesions.<ref>PMID:16116422</ref> <ref>PMID:16116434</ref> [REFERENCE:7][REFERENCE:8]
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Fanconi anemia (FA) is a disorder associated with a failure in DNA repair. FANCM (defective in FA complementation group M) and its partner FAAP24 target other FA proteins to sites of DNA damage. FANCM-FAAP24 is related to XPF/MUS81 endonucleases but lacks endonucleolytic activity. We report a structure of an FANCM C-terminal fragment (FANCMCTD) bound to FAAP24 and DNA. This S-shaped structure reveals the FANCM (HhH)2 domain is buried, whereas the FAAP24 (HhH)2 domain engages DNA. We identify a second DNA contact and a metal center within the FANCM pseudo-nuclease domain and demonstrate that mutations in either region impair double-stranded DNA binding in vitro and FANCM-FAAP24 function in vivo. We show the FANCM translocase domain lies in proximity to FANCMCTD by electron microscopy and that binding fork DNA structures stimulate its ATPase activity. This suggests a tracking model for FANCM-FAAP24 until an encounter with a stalled replication fork triggers ATPase-mediated fork remodeling.

Architecture and DNA Recognition Elements of the Fanconi Anemia FANCM-FAAP24 Complex.,Coulthard R, Deans AJ, Swuec P, Bowles M, Costa A, West SC, McDonald NQ Structure. 2013 Aug 6. pii: S0969-2126(13)00255-4. doi:, 10.1016/j.str.2013.07.006. PMID:23932590<ref>PMID:23932590</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4bxo" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Bowles M]]
[[Category: Costa A]]
[[Category: Coulthard R]]
[[Category: Deans A]]
[[Category: McDonald N]]
[[Category: Purkiss A]]
[[Category: Swuec P]]
[[Category: West S]]