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| | <StructureSection load='4x01' size='340' side='right'caption='[[4x01]], [[Resolution|resolution]] 2.20Å' scene=''> | | <StructureSection load='4x01' size='340' side='right'caption='[[4x01]], [[Resolution|resolution]] 2.20Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4x01]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Fission_yeast Fission yeast]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4X01 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4X01 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4x01]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Schizosaccharomyces_pombe_972h- Schizosaccharomyces pombe 972h-]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4X01 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4X01 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ctp1, mug38, nip1, slr9, SPCC338.08 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=284812 Fission yeast])</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=4x01 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4x01 OCA], [https://pdbe.org/4x01 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4x01 RCSB], [https://www.ebi.ac.uk/pdbsum/4x01 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4x01 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=4x01 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4x01 OCA], [http://pdbe.org/4x01 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4x01 RCSB], [http://www.ebi.ac.uk/pdbsum/4x01 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4x01 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/COM1_SCHPO COM1_SCHPO]] Endonuclease that cooperates with the MRN complex in processing meiotic and mitotic double-strand breaks by allowing the endonucleolytic removal of rec12 from the break sites and ensuring both resection and intrachromosomal association of the broken ends. Required for the formation of RPA-coated single strand DNA adjacent to the DSBs where it functions together with the MRN complex in 5'- 3' resection. Required for the repair of programmed meiotic DSBs. Involved also in an rhp51 recombinase-dependent recombinational repair pathway.<ref>PMID:16303567</ref> <ref>PMID:17936710</ref> <ref>PMID:18378696</ref> <ref>PMID:19139281</ref> | + | [https://www.uniprot.org/uniprot/COM1_SCHPO COM1_SCHPO] Endonuclease that cooperates with the MRN complex in processing meiotic and mitotic double-strand breaks by allowing the endonucleolytic removal of rec12 from the break sites and ensuring both resection and intrachromosomal association of the broken ends. Required for the formation of RPA-coated single strand DNA adjacent to the DSBs where it functions together with the MRN complex in 5'- 3' resection. Required for the repair of programmed meiotic DSBs. Involved also in an rhp51 recombinase-dependent recombinational repair pathway.<ref>PMID:16303567</ref> <ref>PMID:17936710</ref> <ref>PMID:18378696</ref> <ref>PMID:19139281</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Fission yeast]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Andres, S N]] | + | [[Category: Schizosaccharomyces pombe 972h-]] |
| - | [[Category: Williams, R S]]
| + | [[Category: Andres SN]] |
| - | [[Category: Dna binding]]
| + | [[Category: Williams RS]] |
| - | [[Category: Dna binding protein]]
| + | |
| - | [[Category: Dna double-strand break repair]]
| + | |
| - | [[Category: Four-helix bundle]] | + | |
| - | [[Category: Homologous recombination]] | + | |
| Structural highlights
Function
COM1_SCHPO Endonuclease that cooperates with the MRN complex in processing meiotic and mitotic double-strand breaks by allowing the endonucleolytic removal of rec12 from the break sites and ensuring both resection and intrachromosomal association of the broken ends. Required for the formation of RPA-coated single strand DNA adjacent to the DSBs where it functions together with the MRN complex in 5'- 3' resection. Required for the repair of programmed meiotic DSBs. Involved also in an rhp51 recombinase-dependent recombinational repair pathway.[1] [2] [3] [4]
Publication Abstract from PubMed
Ctp1 (also known as CtIP or Sae2) collaborates with Mre11-Rad50-Nbs1 to initiate repair of DNA double-strand breaks (DSBs), but its functions remain enigmatic. We report that tetrameric Schizosaccharomyces pombe Ctp1 contains multivalent DNA-binding and DNA-bridging activities. Through structural and biophysical analyses of the Ctp1 tetramer, we define the salient features of Ctp1 architecture: an N-terminal interlocking tetrameric helical dimer-of-dimers (THDD) domain and a central intrinsically disordered region (IDR) linked to C-terminal 'RHR' DNA-interaction motifs. The THDD, IDR and RHR are required for Ctp1 DNA-bridging activity in vitro, and both the THDD and RHR are required for efficient DSB repair in S. pombe. Our results establish non-nucleolytic roles of Ctp1 in binding and coordination of DSB-repair intermediates and suggest that ablation of human CtIP DNA binding by truncating mutations underlie the CtIP-linked Seckel and Jawad syndromes.
Tetrameric Ctp1 coordinates DNA binding and DNA bridging in DNA double-strand-break repair.,Andres SN, Appel CD, Westmoreland JW, Williams JS, Nguyen Y, Robertson PD, Resnick MA, Williams RS Nat Struct Mol Biol. 2015 Jan 12. doi: 10.1038/nsmb.2945. PMID:25580577[5]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Martin-Castellanos C, Blanco M, Rozalen AE, Perez-Hidalgo L, Garcia AI, Conde F, Mata J, Ellermeier C, Davis L, San-Segundo P, Smith GR, Moreno S. A large-scale screen in S. pombe identifies seven novel genes required for critical meiotic events. Curr Biol. 2005 Nov 22;15(22):2056-62. PMID:16303567 doi:http://dx.doi.org/S0960-9822(05)01277-7
- ↑ Limbo O, Chahwan C, Yamada Y, de Bruin RA, Wittenberg C, Russell P. Ctp1 is a cell-cycle-regulated protein that functions with Mre11 complex to control double-strand break repair by homologous recombination. Mol Cell. 2007 Oct 12;28(1):134-46. PMID:17936710 doi:http://dx.doi.org/10.1016/j.molcel.2007.09.009
- ↑ Akamatsu Y, Murayama Y, Yamada T, Nakazaki T, Tsutsui Y, Ohta K, Iwasaki H. Molecular characterization of the role of the Schizosaccharomyces pombe nip1+/ctp1+ gene in DNA double-strand break repair in association with the Mre11-Rad50-Nbs1 complex. Mol Cell Biol. 2008 Jun;28(11):3639-51. doi: 10.1128/MCB.01828-07. Epub 2008 Mar , 31. PMID:18378696 doi:http://dx.doi.org/10.1128/MCB.01828-07
- ↑ Hartsuiker E, Mizuno K, Molnar M, Kohli J, Ohta K, Carr AM. Ctp1CtIP and Rad32Mre11 nuclease activity are required for Rec12Spo11 removal, but Rec12Spo11 removal is dispensable for other MRN-dependent meiotic functions. Mol Cell Biol. 2009 Apr;29(7):1671-81. doi: 10.1128/MCB.01182-08. Epub 2009 Jan, 12. PMID:19139281 doi:http://dx.doi.org/10.1128/MCB.01182-08
- ↑ Andres SN, Appel CD, Westmoreland JW, Williams JS, Nguyen Y, Robertson PD, Resnick MA, Williams RS. Tetrameric Ctp1 coordinates DNA binding and DNA bridging in DNA double-strand-break repair. Nat Struct Mol Biol. 2015 Jan 12. doi: 10.1038/nsmb.2945. PMID:25580577 doi:http://dx.doi.org/10.1038/nsmb.2945
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