5f5f

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'''Unreleased structure'''
 
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The entry 5f5f is ON HOLD until Paper Publication
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==X-ray structure of Roquin ROQ domain in complex with a Selex-derived hexa-loop RNA motif==
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<StructureSection load='5f5f' size='340' side='right'caption='[[5f5f]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[5f5f]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5F5F OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5F5F FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5f5f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5f5f OCA], [https://pdbe.org/5f5f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5f5f RCSB], [https://www.ebi.ac.uk/pdbsum/5f5f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5f5f ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/RC3H1_MOUSE RC3H1_MOUSE] Post-transcriptional repressor of mRNAs containing a conserved stem loop motif, called constitutive decay element (CDE), which is often located in the 3'-UTR, as in HMGXB3, ICOS, IER3, NFKBID, NFKBIZ, PPP1R10, TNF and in many more mRNAs (PubMed:23663784). Binds to CDE and promotes mRNA deadenylation and degradation. This process does not involve miRNAs. In follicular helper T (Tfh) cells, represses of ICOS and TNFRSF4/Ox40 expression, thus preventing spontaneous Tfh cell differentiation, germinal center B-cell differentiation in the absence of immunization and autoimmunity. In resting or LPS-stimulated macrophages, controls inflammation by suppressing TNF expression. Also recognizes CDE in its own mRNA and in that of paralogous RC3H2, possibly leading to feedback loop regulation.<ref>PMID:15917799</ref> <ref>PMID:18172933</ref> <ref>PMID:20412057</ref> <ref>PMID:20639877</ref> <ref>PMID:23663784</ref> <ref>PMID:23583643</ref> <ref>PMID:23583642</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The RNA-binding protein Roquin is required to prevent autoimmunity. Roquin controls T-helper cell activation and differentiation by limiting the induced expression of costimulatory receptors such as tumor necrosis factor receptor superfamily 4 (Tnfrs4 or Ox40). A constitutive decay element (CDE) with a characteristic triloop hairpin was previously shown to be recognized by Roquin. Here we use SELEX assays to identify a novel U-rich hexaloop motif, representing an alternative decay element (ADE). Crystal structures and NMR data show that the Roquin-1 ROQ domain recognizes hexaloops in the SELEX-derived ADE and in an ADE-like variant present in the Ox40 3'-UTR with identical binding modes. In cells, ADE-like and CDE-like motifs cooperate in the repression of Ox40 by Roquin. Our data reveal an unexpected recognition of hexaloop cis elements for the posttranscriptional regulation of target messenger RNAs by Roquin.
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Authors: Janowski, R., Schlundt, A., Sattler, M., Niessing, D.
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Roquin recognizes a non-canonical hexaloop structure in the 3'-UTR of Ox40.,Janowski R, Heinz GA, Schlundt A, Wommelsdorf N, Brenner S, Gruber AR, Blank M, Buch T, Buhmann R, Zavolan M, Niessing D, Heissmeyer V, Sattler M Nat Commun. 2016 Mar 24;7:11032. doi: 10.1038/ncomms11032. PMID:27010430<ref>PMID:27010430</ref>
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Description: X-ray structure of Roquin ROQ domain in complex with a Selex-derived hexa-loop RNA motif
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[Category: Unreleased Structures]]
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</div>
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[[Category: Niessing, D]]
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<div class="pdbe-citations 5f5f" style="background-color:#fffaf0;"></div>
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[[Category: Schlundt, A]]
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== References ==
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[[Category: Sattler, M]]
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<references/>
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[[Category: Janowski, R]]
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
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[[Category: Mus musculus]]
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[[Category: Janowski R]]
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[[Category: Niessing D]]
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[[Category: Sattler M]]
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[[Category: Schlundt A]]

Current revision

X-ray structure of Roquin ROQ domain in complex with a Selex-derived hexa-loop RNA motif

PDB ID 5f5f

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