2l9h: Difference between revisions
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==Oligomeric Structure of the Chemokine CCL5/RANTES from NMR, MS, and SAXS Data== | ==Oligomeric Structure of the Chemokine CCL5/RANTES from NMR, MS, and SAXS Data== | ||
<StructureSection load='2l9h' size='340' side='right' caption='[[2l9h | <StructureSection load='2l9h' size='340' side='right'caption='[[2l9h]]' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
[[2l9h]] is a 4 chain structure with sequence from [ | <table><tr><td colspan='2'>[[2l9h]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2L9H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2L9H FirstGlance]. <br> | ||
< | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Hybrid , Solution NMR , X-ray solution scattering, 1 model</td></tr> | ||
<b> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2l9h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2l9h OCA], [https://pdbe.org/2l9h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2l9h RCSB], [https://www.ebi.ac.uk/pdbsum/2l9h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2l9h ProSAT]</span></td></tr> | ||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
CCL5 (RANTES) is a proinflammatory chemokine known to activate leukocytes through its receptor, CCR5. Although the monomeric form of CCL5 is sufficient to cause cell migration in vitro, CCL5's propensity for aggregation is essential for migration in vivo, T cell activation and apoptosis, and HIV entry into cells. However, there is currently no structural information on CCL5 oligomers larger than the canonical CC chemokine dimer. In this study the solution structure of a CCL5 oligomer was investigated using an integrated approach, including NMR residual dipolar couplings to determine allowed relative orientations of the component monomers, SAXS to restrict overall shape, and hydroxyl radical footprinting and NMR cross-saturation experiments to identify interface residues. The resulting model of the CCL5 oligomer provides a basis for explaining the disaggregating effect of E66 and E26 mutations and suggests mechanisms by which glycosaminoglycan binding may promote oligomer formation and facilitate cell migration in vivo. | CCL5 (RANTES) is a proinflammatory chemokine known to activate leukocytes through its receptor, CCR5. Although the monomeric form of CCL5 is sufficient to cause cell migration in vitro, CCL5's propensity for aggregation is essential for migration in vivo, T cell activation and apoptosis, and HIV entry into cells. However, there is currently no structural information on CCL5 oligomers larger than the canonical CC chemokine dimer. In this study the solution structure of a CCL5 oligomer was investigated using an integrated approach, including NMR residual dipolar couplings to determine allowed relative orientations of the component monomers, SAXS to restrict overall shape, and hydroxyl radical footprinting and NMR cross-saturation experiments to identify interface residues. The resulting model of the CCL5 oligomer provides a basis for explaining the disaggregating effect of E66 and E26 mutations and suggests mechanisms by which glycosaminoglycan binding may promote oligomer formation and facilitate cell migration in vivo. | ||
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Oligomeric Structure of the Chemokine CCL5/RANTES from NMR, MS, and SAXS Data.,Wang X, Watson C, Sharp JS, Handel TM, Prestegard JH Structure. 2011 Aug 10;19(8):1138-48. PMID:21827949<ref>PMID:21827949</ref> | Oligomeric Structure of the Chemokine CCL5/RANTES from NMR, MS, and SAXS Data.,Wang X, Watson C, Sharp JS, Handel TM, Prestegard JH Structure. 2011 Aug 10;19(8):1138-48. PMID:21827949<ref>PMID:21827949</ref> | ||
From | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | |||
<div class="pdbe-citations 2l9h" style="background-color:#fffaf0;"></div> | |||
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Handel TM]] | ||
[[Category: | [[Category: Prestegard JH]] | ||
[[Category: | [[Category: Sharp JS]] | ||
[[Category: | [[Category: Wang X]] | ||
[[Category: | [[Category: Watson CM]] | ||