6fj5

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==p53-DNA complex 5==
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==New Insights into the Role of DNA Shape on Its Recognition by p53 Proteins (complex p53DBD-AGG-HG)==
<StructureSection load='6fj5' size='340' side='right' caption='[[6fj5]], [[Resolution|resolution]] 2.05&Aring;' scene=''>
<StructureSection load='6fj5' size='340' side='right' caption='[[6fj5]], [[Resolution|resolution]] 2.05&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[6fj5]] is a 6 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6FJ5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6FJ5 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[6fj5]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6FJ5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6FJ5 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>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
</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>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5mct|5mct]], [[5mcu|5mcu]], [[5mcv|5mcv]], [[5mcw|5mcw]], [[5mg7|5mg7]], [[5mf7|5mf7]]</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5mct|5mct]], [[5mcu|5mcu]], [[5mcv|5mcv]], [[5mcw|5mcw]], [[5mg7|5mg7]], [[5mf7|5mf7]]</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TP53, P53 ([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=6fj5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6fj5 OCA], [http://pdbe.org/6fj5 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6fj5 RCSB], [http://www.ebi.ac.uk/pdbsum/6fj5 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6fj5 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=6fj5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6fj5 OCA], [http://pdbe.org/6fj5 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6fj5 RCSB], [http://www.ebi.ac.uk/pdbsum/6fj5 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6fj5 ProSAT]</span></td></tr>
</table>
</table>
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== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/P53_HUMAN P53_HUMAN]] Acts as a tumor suppressor in many tumor types; induces growth arrest or apoptosis depending on the physiological circumstances and cell type. Involved in cell cycle regulation as a trans-activator that acts to negatively regulate cell division by controlling a set of genes required for this process. One of the activated genes is an inhibitor of cyclin-dependent kinases. Apoptosis induction seems to be mediated either by stimulation of BAX and FAS antigen expression, or by repression of Bcl-2 expression. In cooperation with mitochondrial PPIF is involved in activating oxidative stress-induced necrosis; te function is largely independent of transcription. Induces the transcription of long intergenic non-coding RNA p21 (lincRNA-p21) and lincRNA-Mkln1. LincRNA-p21 participates in TP53-dependent transcriptional repression leading to apoptosis and seem to have to effect on cell-cycle regulation. Implicated in Notch signaling cross-over. Prevents CDK7 kinase activity when associated to CAK complex in response to DNA damage, thus stopping cell cycle progression. Isoform 2 enhances the transactivation activity of isoform 1 from some but not all TP53-inducible promoters. Isoform 4 suppresses transactivation activity and impairs growth suppression mediated by isoform 1. Isoform 7 inhibits isoform 1-mediated apoptosis.<ref>PMID:9840937</ref> <ref>PMID:11025664</ref> <ref>PMID:12810724</ref> <ref>PMID:15186775</ref> <ref>PMID:15340061</ref> <ref>PMID:17317671</ref> <ref>PMID:17349958</ref> <ref>PMID:19556538</ref> <ref>PMID:20673990</ref> <ref>PMID:20959462</ref> <ref>PMID:22726440</ref>
[[http://www.uniprot.org/uniprot/P53_HUMAN P53_HUMAN]] Acts as a tumor suppressor in many tumor types; induces growth arrest or apoptosis depending on the physiological circumstances and cell type. Involved in cell cycle regulation as a trans-activator that acts to negatively regulate cell division by controlling a set of genes required for this process. One of the activated genes is an inhibitor of cyclin-dependent kinases. Apoptosis induction seems to be mediated either by stimulation of BAX and FAS antigen expression, or by repression of Bcl-2 expression. In cooperation with mitochondrial PPIF is involved in activating oxidative stress-induced necrosis; te function is largely independent of transcription. Induces the transcription of long intergenic non-coding RNA p21 (lincRNA-p21) and lincRNA-Mkln1. LincRNA-p21 participates in TP53-dependent transcriptional repression leading to apoptosis and seem to have to effect on cell-cycle regulation. Implicated in Notch signaling cross-over. Prevents CDK7 kinase activity when associated to CAK complex in response to DNA damage, thus stopping cell cycle progression. Isoform 2 enhances the transactivation activity of isoform 1 from some but not all TP53-inducible promoters. Isoform 4 suppresses transactivation activity and impairs growth suppression mediated by isoform 1. Isoform 7 inhibits isoform 1-mediated apoptosis.<ref>PMID:9840937</ref> <ref>PMID:11025664</ref> <ref>PMID:12810724</ref> <ref>PMID:15186775</ref> <ref>PMID:15340061</ref> <ref>PMID:17317671</ref> <ref>PMID:17349958</ref> <ref>PMID:19556538</ref> <ref>PMID:20673990</ref> <ref>PMID:20959462</ref> <ref>PMID:22726440</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The tumor suppressor p53 acts as a transcription factor recognizing diverse DNA response elements (REs). Previous structural studies of p53-DNA complexes revealed non-canonical Hoogsteen geometry of A/T base pairs at conserved CATG motifs leading to changes in DNA shape and its interface with p53. To study the effects of DNA shape on binding characteristics, we designed REs with modified base pairs "locked" into either Hoogsteen or Watson-Crick form. Here we present crystal structures of these complexes and their thermodynamic and kinetic parameters, demonstrating that complexes with Hoogsteen base pairs are stabilized relative to those with all-Watson-Crick base pairs. CATG motifs are abundant in p53REs such as GADD45 and p53R2 related to cell-cycle arrest and DNA repair. The high-resolution structures of these complexes validate their propensity to adopt the unique Hoogsteen-induced structure, thus providing insights into the functional role of DNA shape and broadening the mechanisms that contribute to DNA recognition by proteins.
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New Insights into the Role of DNA Shape on Its Recognition by p53 Proteins.,Golovenko D, Brauning B, Vyas P, Haran TE, Rozenberg H, Shakked Z Structure. 2018 Sep 4;26(9):1237-1250.e6. doi: 10.1016/j.str.2018.06.006. Epub, 2018 Jul 26. PMID:30057026<ref>PMID:30057026</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 6fj5" style="background-color:#fffaf0;"></div>
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==See Also==
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*[[P53|P53]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Human]]
[[Category: Golovenko, D]]
[[Category: Golovenko, D]]
[[Category: Rozenberg, H]]
[[Category: Rozenberg, H]]

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New Insights into the Role of DNA Shape on Its Recognition by p53 Proteins (complex p53DBD-AGG-HG)

6fj5, resolution 2.05Å

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