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| | ==Complex structure of Rtt107p and phosphorylated histone H2A== | | ==Complex structure of Rtt107p and phosphorylated histone H2A== |
| - | <StructureSection load='3t7k' size='340' side='right' caption='[[3t7k]], [[Resolution|resolution]] 2.03Å' scene=''> | + | <StructureSection load='3t7k' size='340' side='right'caption='[[3t7k]], [[Resolution|resolution]] 2.03Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3t7k]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3T7K OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3T7K FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3t7k]] is a 4 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=3T7K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3T7K FirstGlance]. <br> |
| - | </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</scene></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]] 2.028Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3t7i|3t7i]], [[3t7j|3t7j]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">RTT107 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 Saccharomyces cerevisiae])</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=3t7k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3t7k OCA], [https://pdbe.org/3t7k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3t7k RCSB], [https://www.ebi.ac.uk/pdbsum/3t7k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3t7k 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=3t7k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3t7k OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3t7k RCSB], [http://www.ebi.ac.uk/pdbsum/3t7k PDBsum]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/RT107_YEAST RT107_YEAST]] Required for resumption of chromosome replication after DNA damage, specifically in S phase. Is recruited to chromatin in the presence of RTT109 and RTT101 in response to stalled replication forks and acts as a scaffold during DNA repair.<ref>PMID:14988729</ref> <ref>PMID:17978089</ref> [[http://www.uniprot.org/uniprot/H2A1_YEAST H2A1_YEAST]] Core component of nucleosome which plays a central role in DNA double strand break (DSB) repair. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling.<ref>PMID:11140636</ref> <ref>PMID:15458641</ref> <ref>PMID:15610741</ref> <ref>PMID:16299494</ref> | + | [https://www.uniprot.org/uniprot/H2A1_YEAST H2A1_YEAST] Core component of nucleosome which plays a central role in DNA double strand break (DSB) repair. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling.<ref>PMID:11140636</ref> <ref>PMID:15458641</ref> <ref>PMID:15610741</ref> <ref>PMID:16299494</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®/PubMed®, a database of the U.S. National Library of Medicine.<br> | | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> |
| | </div> | | </div> |
| | + | <div class="pdbe-citations 3t7k" style="background-color:#fffaf0;"></div> |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Saccharomyces cerevisiae]] | + | [[Category: Large Structures]] |
| - | [[Category: Li, F]] | + | [[Category: Saccharomyces cerevisiae S288C]] |
| - | [[Category: Li, X]] | + | [[Category: Li F]] |
| - | [[Category: Shi, Y]] | + | [[Category: Li X]] |
| - | [[Category: Wu, J]] | + | [[Category: Shi Y]] |
| - | [[Category: Brct]]
| + | [[Category: Wu J]] |
| - | [[Category: Dna repair]]
| + | |
| - | [[Category: Phospho-peptide]]
| + | |
| - | [[Category: Protein binding]]
| + | |
| Structural highlights
Function
H2A1_YEAST Core component of nucleosome which plays a central role in DNA double strand break (DSB) repair. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling.[1] [2] [3] [4]
Publication Abstract from PubMed
Rtt107 (regulator of Ty1 transposition 107; Esc4) is a DNA repair protein from Saccharomyces cerevisiae that can restore stalled replication forks following DNA damage. There are six BRCT (BRCA1 C-terminal) domains in Rtt107 that act as binding sites for other recruited proteins during DNA repair. Several Rtt107 binding partners have been identified, including Slx4, Rtt101, Rad55, and the Smc5/6 (structural maintenance of chromosome) protein complex. Rtt107 can reportedly be recruited to chromatin in the presence of Rtt101 and Rtt109 upon DNA damage, but the chromatin-binding site of Rtt107 has not been identified. Here, we report our investigation of the interaction between phosphorylated histone H2A (gammaH2A) and the C-terminal tandem BRCT repeats (BRCT(5)-BRCT(6)) of Rtt107. The crystal structures of BRCT(5)-BRCT(6) alone and in a complex with gammaH2A reveal the molecular basis of the Rtt107-gammaH2A interaction. We used in vitro mutagenesis and a fluorescence polarization assay to confirm the location of the Rtt107 motif that is crucial for this interaction. In addition, these assays indicated that this interaction requires the phosphorylation of H2A. An in vivo phenotypic analysis in yeast demonstrated the critical role of BRCT(5)-BRCT(6) and its interaction with gammaH2A during the DNA damage response. Our results shed new light on the molecular mechanism by which Rtt107 is recruited to chromatin in response to stalled DNA replication forks.
Structure of C-terminal tandem BRCT repeats of Rtt107 protein reveals critical role in interaction with phosphorylated histone H2A during DNA damage repair.,Li X, Liu K, Li F, Wang J, Huang H, Wu J, Shi Y J Biol Chem. 2012 Mar 16;287(12):9137-46. Epub 2012 Jan 19. PMID:22262834[5]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Downs JA, Lowndes NF, Jackson SP. A role for Saccharomyces cerevisiae histone H2A in DNA repair. Nature. 2000 Dec 21-28;408(6815):1001-4. PMID:11140636 doi:10.1038/35050000
- ↑ Shroff R, Arbel-Eden A, Pilch D, Ira G, Bonner WM, Petrini JH, Haber JE, Lichten M. Distribution and dynamics of chromatin modification induced by a defined DNA double-strand break. Curr Biol. 2004 Oct 5;14(19):1703-11. PMID:15458641 doi:10.1016/j.cub.2004.09.047
- ↑ Unal E, Arbel-Eden A, Sattler U, Shroff R, Lichten M, Haber JE, Koshland D. DNA damage response pathway uses histone modification to assemble a double-strand break-specific cohesin domain. Mol Cell. 2004 Dec 22;16(6):991-1002. PMID:15610741 doi:S1097276504007191
- ↑ Keogh MC, Kim JA, Downey M, Fillingham J, Chowdhury D, Harrison JC, Onishi M, Datta N, Galicia S, Emili A, Lieberman J, Shen X, Buratowski S, Haber JE, Durocher D, Greenblatt JF, Krogan NJ. A phosphatase complex that dephosphorylates gammaH2AX regulates DNA damage checkpoint recovery. Nature. 2006 Jan 26;439(7075):497-501. Epub 2005 Nov 20. PMID:16299494 doi:nature04384
- ↑ Li X, Liu K, Li F, Wang J, Huang H, Wu J, Shi Y. Structure of C-terminal tandem BRCT repeats of Rtt107 protein reveals critical role in interaction with phosphorylated histone H2A during DNA damage repair. J Biol Chem. 2012 Mar 16;287(12):9137-46. Epub 2012 Jan 19. PMID:22262834 doi:10.1074/jbc.M111.311860
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