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{{STRUCTURE_4fmo|  PDB=4fmo  |  SCENE=  }}
===Structure of the C-terminal domain of the Saccharomyces cerevisiae MUTL alpha (MLH1/PMS1) heterodimer bound to a fragment of exo1===
{{ABSTRACT_PUBMED_23435383}}


==Function==
==Structure of the C-terminal domain of the Saccharomyces cerevisiae MUTL alpha (MLH1/PMS1) heterodimer bound to a fragment of exo1==
[[http://www.uniprot.org/uniprot/MLH1_YEAST MLH1_YEAST]] Required for DNA mismatch repair (MMR), correcting base-base mismatches and insertion-deletion loops (IDLs) resulting from DNA replication, DNA damage or from recombination events between non-identical sequences during meiosis. Component of different MutL heterodimers that form a ternary complex with the MutS heterodimers, which initially recognize the DNA mismatches. This complex is thought to be responsible for directing the downsteam MMR events, including strand discrimination, excision, and resynthesis. Plays a major role in maintaining the genetic stability of simple sequence repeats, the repair of heteroduplex sites present in meiotic recombination intermediates, and the promotion of meiotic crossing-over.<ref>PMID:9545323</ref> <ref>PMID:10570173</ref> <ref>PMID:12529393</ref> [[http://www.uniprot.org/uniprot/EXO1_YEAST EXO1_YEAST]] 5'->3' double-stranded DNA exonuclease involved in mismatch repair and eventually also in mitotic recombination between direct repeats. Also has a minor role in the correction of large DNA mismatches that occur in the heteroduplex DNA during meiotic recombination at the HIS4 locus.<ref>PMID:9207118</ref> <ref>PMID:9111347</ref> <ref>PMID:11102356</ref> <ref>PMID:15629726</ref> [[http://www.uniprot.org/uniprot/PMS1_YEAST PMS1_YEAST]] Required for DNA mismatch repair (MMR), correcting base-base mismatches and insertion-deletion loops (IDLs) resulting from DNA replication, DNA damage or from recombination events between non-identical sequences during meiosis. Component of the MutLalpha heterodimer that forms a ternary complex with the MutS heterodimers, which initially recognize the DNA mismatches. This complex is thought to be responsible for directing the downsteam MMR events, including strand discrimination, excision, and resynthesis. Plays a major role in maintaining the genetic stability of simple sequence repeats and in the repair of heteroduplex sites present in meiotic recombination intermediates.<ref>PMID:9545323</ref> <ref>PMID:10570173</ref> <ref>PMID:16227575</ref>
<StructureSection load='4fmo' size='340' side='right'caption='[[4fmo]], [[Resolution|resolution]] 3.04&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4fmo]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_S288C Saccharomyces cerevisiae S288C]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FMO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FMO 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]] 3.04&#8491;</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>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=4fmo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fmo OCA], [https://pdbe.org/4fmo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fmo RCSB], [https://www.ebi.ac.uk/pdbsum/4fmo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fmo ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/MLH1_YEAST MLH1_YEAST] Required for DNA mismatch repair (MMR), correcting base-base mismatches and insertion-deletion loops (IDLs) resulting from DNA replication, DNA damage or from recombination events between non-identical sequences during meiosis. Component of different MutL heterodimers that form a ternary complex with the MutS heterodimers, which initially recognize the DNA mismatches. This complex is thought to be responsible for directing the downsteam MMR events, including strand discrimination, excision, and resynthesis. Plays a major role in maintaining the genetic stability of simple sequence repeats, the repair of heteroduplex sites present in meiotic recombination intermediates, and the promotion of meiotic crossing-over.<ref>PMID:9545323</ref> <ref>PMID:10570173</ref> <ref>PMID:12529393</ref>  


==About this Structure==
==See Also==
[[4fmo]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_s288c Saccharomyces cerevisiae s288c]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FMO OCA].
*[[DNA mismatch repair protein 3D structures|DNA mismatch repair protein 3D structures]]
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:023435383</ref><references group="xtra"/><references/>
__TOC__
[[Category: Saccharomyces cerevisiae s288c]]
</StructureSection>
[[Category: Charbonnier, J B.]]
[[Category: Large Structures]]
[[Category: Gueneau, E.]]
[[Category: Saccharomyces cerevisiae S288C]]
[[Category: Legrand, P.]]
[[Category: Charbonnier JB]]
[[Category: Dna damage]]
[[Category: Gueneau E]]
[[Category: Dna repair]]
[[Category: Legrand P]]
[[Category: Endonuclease]]
[[Category: Hydrolase]]
[[Category: Mismatch repair]]
[[Category: Mutl]]
[[Category: Zn-binding protein]]
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