2zix

From Proteopedia

(Difference between revisions)

Revision as of 06:51, 18 October 2018

Crystal structure of the Mus81-Eme1 complex

Structural highlights

2zix 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.
Related:	2ziu, 2ziv, 2ziw
Gene:	MUS81 (HUMAN), EME1 (HUMAN)
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] [EME1_HUMAN] Interacts with MUS81 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.^[10] ^[11] ^[12] ^[13]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The Mus81-Eme1 complex is a structure-specific endonuclease that plays an important role in rescuing stalled replication forks and resolving the meiotic recombination intermediates in eukaryotes. We have determined the crystal structure of the Mus81-Eme1 complex. Both Mus81 and Eme1 consist of a central nuclease domain, two repeats of the helix-hairpin-helix (HhH) motif at their C-terminal region, and a linker helix. While each domain structure resembles archaeal XPF homologs, the overall structure is significantly different from those due to the structure of a linker helix. We show that a flexible intradomain linker that formed with 36 residues in the nuclease domain of Eme1 is essential for the recognition of DNA. We identified several basic residues lining the outer surface of the active site cleft of Mus81 that are involved in the interaction with a flexible arm of a nicked Holliday junction (HJ). These interactions might contribute to the optimal positioning of the opposite junction across the nick into the catalytic site, which provided the basis for the "nick and counternick" mechanism of Mus81-Eme1 and for the nicked HJ to be the favored in vitro substrate of this enzyme.

Crystal structure of the Mus81-Eme1 complex.,Chang JH, Kim JJ, Choi JM, Lee JH, Cho Y Genes Dev. 2008 Apr 15;22(8):1093-106. PMID:18413719^[14]

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
↑ 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
↑ 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
↑ Chang JH, Kim JJ, Choi JM, Lee JH, Cho Y. Crystal structure of the Mus81-Eme1 complex. Genes Dev. 2008 Apr 15;22(8):1093-106. PMID:18413719 doi:22/8/1093

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2zix"

@@ Line 1: / Line 1: @@
 ==Crystal structure of the Mus81-Eme1 complex==
 <StructureSection load='2zix' size='340' side='right' caption='[[2zix]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2ziu|2ziu]], [[2ziv|2ziv]], [[2ziw|2ziw]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MUS81 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), EME1 ([http://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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2zix FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2zix OCA], [http://pdbe.org/2zix PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2zix RCSB], [http://www.ebi.ac.uk/pdbsum/2zix 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=2zix FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2zix OCA], [http://pdbe.org/2zix PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2zix RCSB], [http://www.ebi.ac.uk/pdbsum/2zix PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2zix ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 13: / Line 14: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zi/2zix_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zi/2zix_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 41: / Line 42: @@
 [[Category: Kim, J J]]
 [[Category: Lee, J H]]
+[[Category: Alternative splicing]]
 [[Category: Dna damage]]
 [[Category: Dna recombination]]
@@ Line 52: / Line 54: @@
 [[Category: Nucleus]]
 [[Category: Phosphoprotein]]
+[[Category: Polymorphism]]

2zix

From Proteopedia

Revision as of 06:51, 18 October 2018

Crystal structure of the Mus81-Eme1 complex

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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