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4p0p

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Crystal structure of Human Mus81-Eme1 in complex with 5'-flap DNA, and Mg2+

Structural highlights

4p0p is a 5 chain structure with sequence from Homo sapiens and Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.8Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

MUS81_HUMAN Interacts with EME1 and EME2 to form a DNA structure-specific endonuclease with substrate preference for branched DNA structures with a 5'-end at the branch nick. Typical substrates include 3'-flap structures, replication forks and nicked Holliday junctions. May be required in mitosis for the processing of stalled or collapsed replication forks.^[1] ^[2] ^[3] ^[4] ^[5] ^[6] ^[7] ^[8] ^[9]

Publication Abstract from PubMed

The Mus81-Eme1 complex is a structure-selective endonuclease with a critical role in the resolution of recombination intermediates during DNA repair after interstrand cross-links, replication fork collapse, or double-strand breaks. To explain the molecular basis of 3' flap substrate recognition and cleavage mechanism by Mus81-Eme1, we determined crystal structures of human Mus81-Eme1 bound to various flap DNA substrates. Mus81-Eme1 undergoes gross substrate-induced conformational changes that reveal two key features: (i) a hydrophobic wedge of Mus81 that separates pre- and post-nick duplex DNA and (ii) a "5' end binding pocket" that hosts the 5' nicked end of post-nick DNA. These features are crucial for comprehensive protein-DNA interaction, sharp bending of the 3' flap DNA substrate, and incision strand placement at the active site. While Mus81-Eme1 unexpectedly shares several common features with members of the 5' flap nuclease family, the combined structural, biochemical, and biophysical analyses explain why Mus81-Eme1 preferentially cleaves 3' flap DNA substrates with 5' nicked ends.

Crystal structures of the structure-selective nuclease Mus81-Eme1 bound to flap DNA substrates.,Gwon GH, Jo A, Baek K, Jin KS, Fu Y, Lee JB, Kim Y, Cho Y EMBO J. 2014 May 2;33(9):1061-72. doi: 10.1002/embj.201487820. Epub 2014 Apr 14. PMID:24733841^[10]

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

References

↑ Chen XB, Melchionna R, Denis CM, Gaillard PH, Blasina A, Van de Weyer I, Boddy MN, Russell P, Vialard J, McGowan CH. Human Mus81-associated endonuclease cleaves Holliday junctions in vitro. Mol Cell. 2001 Nov;8(5):1117-27. PMID:11741546
↑ Constantinou A, Chen XB, McGowan CH, West SC. Holliday junction resolution in human cells: two junction endonucleases with distinct substrate specificities. EMBO J. 2002 Oct 15;21(20):5577-85. PMID:12374758
↑ Ogrunc M, Sancar A. Identification and characterization of human MUS81-MMS4 structure-specific endonuclease. J Biol Chem. 2003 Jun 13;278(24):21715-20. Epub 2003 Apr 9. PMID:12686547 doi:http://dx.doi.org/10.1074/jbc.M302484200
↑ Ciccia A, Constantinou A, West SC. Identification and characterization of the human mus81-eme1 endonuclease. J Biol Chem. 2003 Jul 4;278(27):25172-8. Epub 2003 Apr 29. PMID:12721304 doi:http://dx.doi.org/10.1074/jbc.M302882200
↑ Blais V, Gao H, Elwell CA, Boddy MN, Gaillard PH, Russell P, McGowan CH. RNA interference inhibition of Mus81 reduces mitotic recombination in human cells. Mol Biol Cell. 2004 Feb;15(2):552-62. Epub 2003 Nov 14. PMID:14617801 doi:http://dx.doi.org/10.1091/mbc.E03-08-0580
↑ Zhang R, Sengupta S, Yang Q, Linke SP, Yanaihara N, Bradsher J, Blais V, McGowan CH, Harris CC. BLM helicase facilitates Mus81 endonuclease activity in human cells. Cancer Res. 2005 Apr 1;65(7):2526-31. PMID:15805243 doi:http://dx.doi.org/10.1158/0008-5472.CAN-04-2421
↑ Ciccia A, Ling C, Coulthard R, Yan Z, Xue Y, Meetei AR, Laghmani el H, Joenje H, McDonald N, de Winter JP, Wang W, West SC. Identification of FAAP24, a Fanconi anemia core complex protein that interacts with FANCM. Mol Cell. 2007 Feb 9;25(3):331-43. PMID:17289582 doi:http://dx.doi.org/S1097-2765(07)00007-X
↑ Munoz IM, Hain K, Declais AC, Gardiner M, Toh GW, Sanchez-Pulido L, Heuckmann JM, Toth R, Macartney T, Eppink B, Kanaar R, Ponting CP, Lilley DM, Rouse J. Coordination of structure-specific nucleases by human SLX4/BTBD12 is required for DNA repair. Mol Cell. 2009 Jul 10;35(1):116-27. PMID:19595721 doi:S1097-2765(09)00433-X
↑ Svendsen JM, Smogorzewska A, Sowa ME, O'Connell BC, Gygi SP, Elledge SJ, Harper JW. Mammalian BTBD12/SLX4 assembles a Holliday junction resolvase and is required for DNA repair. Cell. 2009 Jul 10;138(1):63-77. PMID:19596235 doi:S0092-8674(09)00777-6
↑ Gwon GH, Jo A, Baek K, Jin KS, Fu Y, Lee JB, Kim Y, Cho Y. Crystal structures of the structure-selective nuclease Mus81-Eme1 bound to flap DNA substrates. EMBO J. 2014 May 2;33(9):1061-72. doi: 10.1002/embj.201487820. Epub 2014 Apr 14. PMID:24733841 doi:http://dx.doi.org/10.1002/embj.201487820

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4p0p"

@@ Line 1: / Line 1: @@
 ==Crystal structure of Human Mus81-Eme1 in complex with 5'-flap DNA, and Mg2+==
-<StructureSection load='4p0p' size='340' side='right' caption='[[4p0p]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
+<StructureSection load='4p0p' size='340' side='right'caption='[[4p0p]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[4p0p]] is a 5 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4P0P OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4P0P FirstGlance]. <br>
+<table><tr><td colspan='2'>[[4p0p]] is a 5 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=4P0P OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4P0P FirstGlance]. <br>
-</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene><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]] 2.8&#8491;</td></tr>
-<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4p0q|4p0q]], [[4p0r|4p0r]], [[4p0s|4p0s]]</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
-<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4p0p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4p0p OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4p0p RCSB], [http://www.ebi.ac.uk/pdbsum/4p0p PDBsum]</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=4p0p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4p0p OCA], [https://pdbe.org/4p0p PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4p0p RCSB], [https://www.ebi.ac.uk/pdbsum/4p0p PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4p0p ProSAT]</span></td></tr>
-<table>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/MUS81_HUMAN MUS81_HUMAN] Interacts with EME1 and EME2 to form a DNA structure-specific endonuclease with substrate preference for branched DNA structures with a 5'-end at the branch nick. Typical substrates include 3'-flap structures, replication forks and nicked Holliday junctions. May be required in mitosis for the processing of stalled or collapsed replication forks.<ref>PMID:11741546</ref> <ref>PMID:12374758</ref> <ref>PMID:12686547</ref> <ref>PMID:12721304</ref> <ref>PMID:14617801</ref> <ref>PMID:15805243</ref> <ref>PMID:17289582</ref> <ref>PMID:19595721</ref> <ref>PMID:19596235</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 15: / Line 18: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4p0p" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Endonuclease 3D structures|Endonuclease 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Baek, K.]]
+[[Category: Homo sapiens]]
-[[Category: Cho, Y.]]
+[[Category: Large Structures]]
-[[Category: Gwon, G H.]]
+[[Category: Synthetic construct]]
-[[Category: Hydroase-dna complex]]
+[[Category: Baek K]]
-[[Category: Hydrolase-dna complex]]
+[[Category: Cho Y]]
-[[Category: Resolvase]]
+[[Category: Gwon GH]]

4p0p

From Proteopedia

Current revision

Crystal structure of Human Mus81-Eme1 in complex with 5'-flap DNA, and Mg2+

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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