5c7f: Difference between revisions
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==Crystal structure of the rice Topless related protein 2 (TPR2) N-terminal domain (1-209) in complex with Arabidopsis IAA1 peptide== | ==Crystal structure of the rice Topless related protein 2 (TPR2) N-terminal domain (1-209) in complex with Arabidopsis IAA1 peptide== | ||
<StructureSection load='5c7f' size='340' side='right' caption='[[5c7f]], [[Resolution|resolution]] 2.70Å' scene=''> | <StructureSection load='5c7f' size='340' side='right'caption='[[5c7f]], [[Resolution|resolution]] 2.70Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[5c7f]] is a 8 chain structure with sequence from [ | <table><tr><td colspan='2'>[[5c7f]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Arabidopsis_thaliana Arabidopsis thaliana] and [https://en.wikipedia.org/wiki/Oryza_sativa Oryza sativa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5C7F OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5C7F FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | |||
<tr id=' | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5c7f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5c7f OCA], [https://pdbe.org/5c7f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5c7f RCSB], [https://www.ebi.ac.uk/pdbsum/5c7f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5c7f ProSAT]</span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | |||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/TPR1_ORYSJ TPR1_ORYSJ] Probable downstream regulator of strigolactones signaling.[UniProtKB:Q0J7U6] | ||
<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: | [[Category: Arabidopsis thaliana]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Oryza sativa]] | ||
[[Category: | [[Category: Brunzelle JS]] | ||
[[Category: | [[Category: Gu X]] | ||
[[Category: | [[Category: Ke J]] | ||
[[Category: | [[Category: Ma H]] | ||
[[Category: | [[Category: Melcher K]] | ||
[[Category: | [[Category: Xu HE]] | ||
Latest revision as of 11:35, 27 September 2023
Structural highlights
FunctionTPR1_ORYSJ Probable downstream regulator of strigolactones signaling.[UniProtKB:Q0J7U6] Publication Abstract from PubMedTOPLESS (TPL) and TOPLESS-related (TPR) proteins comprise a conserved family of plant transcriptional corepressors that are related to Tup1, Groucho, and TLE (transducin-like enhancer of split) corepressors in yeast, insects, and mammals. In plants, TPL/TPR corepressors regulate development, stress responses, and hormone signaling through interaction with small ethylene response factor-associated amphiphilic repression (EAR) motifs found in diverse transcriptional repressors. How EAR motifs can interact with TPL/TPR proteins is unknown. We confirm the amino-terminal domain of the TPL family of corepressors, which we term TOPLESS domain (TPD), as the EAR motif-binding domain. To understand the structural basis of this interaction, we determined the crystal structures of the TPD of rice (Os) TPR2 in apo (apo protein) state and in complexes with the EAR motifs from Arabidopsis NINJA (novel interactor of JAZ), IAA1 (auxin-responsive protein 1), and IAA10, key transcriptional repressors involved in jasmonate and auxin signaling. The OsTPR2 TPD adopts a new fold of nine helices, followed by a zinc finger, which are arranged into a disc-like tetramer. The EAR motifs in the three different complexes adopt a similar extended conformation with the hydrophobic residues fitting into the same surface groove of each OsTPR2 monomer. Sequence alignments and structure-based mutagenesis indicate that this mode of corepressor binding is highly conserved in a large set of transcriptional repressors, thus providing a general mechanism for gene repression mediated by the TPL family of corepressors. Structural basis for recognition of diverse transcriptional repressors by the TOPLESS family of corepressors.,Ke J, Ma H, Gu X, Thelen A, Brunzelle JS, Li J, Xu HE, Melcher K Sci Adv. 2015 Jul 24;1(6):e1500107. eCollection 2015 Jul. PMID:26601214[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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