4m7c: Difference between revisions

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==Crystal structure of the TRF2-binding motif of SLX4 in complex with the TRFH domain of TRF2==
==Crystal structure of the TRF2-binding motif of SLX4 in complex with the TRFH domain of TRF2==
<StructureSection load='4m7c' size='340' side='right' caption='[[4m7c]], [[Resolution|resolution]] 2.05&Aring;' scene=''>
<StructureSection load='4m7c' size='340' side='right'caption='[[4m7c]], [[Resolution|resolution]] 2.05&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4m7c]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4M7C OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4M7C FirstGlance]. <br>
<table><tr><td colspan='2'>[[4m7c]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4M7C OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4M7C FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4m79|4m79]]</td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.05&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TERF2, TRBF2, TRF2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=4m7c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4m7c OCA], [https://pdbe.org/4m7c PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4m7c RCSB], [https://www.ebi.ac.uk/pdbsum/4m7c PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4m7c ProSAT]</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=4m7c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4m7c OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4m7c RCSB], [http://www.ebi.ac.uk/pdbsum/4m7c PDBsum]</span></td></tr>
</table>
</table>
== Disease ==
[[http://www.uniprot.org/uniprot/SLX4_HUMAN SLX4_HUMAN]] Fanconi anemia. The disease is caused by mutations affecting the gene represented in this entry.
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/TERF2_HUMAN TERF2_HUMAN]] Binds the telomeric double-stranded 5'-TTAGGG-3' repeat and plays a central role in telomere maintenance and protection against end-to-end fusion of chromosomes. In addition to its telomeric DNA-binding role, required to recruit a number of factors and enzymes required for telomere protection, including the shelterin complex, TERF2IP/RAP1 and DCLRE1B/Apollo. Component of the shelterin complex (telosome) that is involved in the regulation of telomere length and protection. Shelterin associates with arrays of double-stranded 5'-TTAGGG-3' repeats added by telomerase and protects chromosome ends; without its protective activity, telomeres are no longer hidden from the DNA damage surveillance and chromosome ends are inappropriately processed by DNA repair pathways. Together with DCLRE1B/Apollo, plays a key role in telomeric loop (T loop) formation by generating 3' single-stranded overhang at the leading end telomeres: T loops have been proposed to protect chromosome ends from degradation and repair. Required both to recruit DCLRE1B/Apollo to telomeres and activate the exonuclease activity of DCLRE1B/Apollo. Preferentially binds to positive supercoiled DNA. Together with DCLRE1B/Apollo, required to control the amount of DNA topoisomerase (TOP1, TOP2A and TOP2B) needed for telomere replication during fork passage and prevent aberrant telomere topology. Recruits TERF2IP/RAP1 to telomeres, thereby participating in to repressing homology-directed repair (HDR), which can affect telomere length.<ref>PMID:9476899</ref> <ref>PMID:16166375</ref> <ref>PMID:20655466</ref> [[http://www.uniprot.org/uniprot/SLX4_HUMAN SLX4_HUMAN]] Regulatory subunit that interacts with and increases the activity of different structure-specific endonucleases. Has several distinct roles in protecting genome stability by resolving diverse forms of deleterious DNA structures originating from replication and recombination intermediates and from DNA damage. Component of the SLX1-SLX4 structure-specific endonuclease that resolves DNA secondary structures generated during DNA repair and recombination. Has endonuclease activity towards branched DNA substrates, introducing single-strand cuts in duplex DNA close to junctions with ss-DNA. Has a preference for 5'-flap structures, and promotes symmetrical cleavage of static and migrating Holliday junctions (HJs). Resolves HJs by generating two pairs of ligatable, nicked duplex products. Interacts with the structure-specific ERCC4-ERCC1 endonuclease and promotes the cleavage of bubble structures. Interacts with the structure-specific MUS81-EME1 endonuclease and promotes the cleavage of 3'-flap and replication fork-like structures. SLX4 is required for recovery from alkylation-induced DNA damage and is involved in the resolution of DNA double-strand breaks.<ref>PMID:19596235</ref> <ref>PMID:19596236</ref> <ref>PMID:19595721</ref> <ref>PMID:19595722</ref> 
[https://www.uniprot.org/uniprot/TERF2_HUMAN TERF2_HUMAN] Binds the telomeric double-stranded 5'-TTAGGG-3' repeat and plays a central role in telomere maintenance and protection against end-to-end fusion of chromosomes. In addition to its telomeric DNA-binding role, required to recruit a number of factors and enzymes required for telomere protection, including the shelterin complex, TERF2IP/RAP1 and DCLRE1B/Apollo. Component of the shelterin complex (telosome) that is involved in the regulation of telomere length and protection. Shelterin associates with arrays of double-stranded 5'-TTAGGG-3' repeats added by telomerase and protects chromosome ends; without its protective activity, telomeres are no longer hidden from the DNA damage surveillance and chromosome ends are inappropriately processed by DNA repair pathways. Together with DCLRE1B/Apollo, plays a key role in telomeric loop (T loop) formation by generating 3' single-stranded overhang at the leading end telomeres: T loops have been proposed to protect chromosome ends from degradation and repair. Required both to recruit DCLRE1B/Apollo to telomeres and activate the exonuclease activity of DCLRE1B/Apollo. Preferentially binds to positive supercoiled DNA. Together with DCLRE1B/Apollo, required to control the amount of DNA topoisomerase (TOP1, TOP2A and TOP2B) needed for telomere replication during fork passage and prevent aberrant telomere topology. Recruits TERF2IP/RAP1 to telomeres, thereby participating in to repressing homology-directed repair (HDR), which can affect telomere length.<ref>PMID:9476899</ref> <ref>PMID:16166375</ref> <ref>PMID:20655466</ref>  
<div style="background-color:#fffaf0;">
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
</div>
<div class="pdbe-citations 4m7c" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>
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</StructureSection>
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Chen, Y]]
[[Category: Large Structures]]
[[Category: Lei, M]]
[[Category: Chen Y]]
[[Category: Liu, Y]]
[[Category: Lei M]]
[[Category: Wan, B]]
[[Category: Liu Y]]
[[Category: Wu, J]]
[[Category: Wan B]]
[[Category: Alt]]
[[Category: Wu J]]
[[Category: Dna]]
[[Category: Endonuclease]]
[[Category: Endonuclease regulator]]
[[Category: Hydrolase regulator]]
[[Category: T-loop]]
[[Category: Telomere]]
[[Category: Transcription]]
Retrieved from "https://proteopedia.org/4m7c"