8q86
From Proteopedia
(Difference between revisions)
m (Protected "8q86" [edit=sysop:move=sysop]) |
|||
| (One intermediate revision not shown.) | |||
| Line 1: | Line 1: | ||
| - | '''Unreleased structure''' | ||
| - | + | ==Trimer of the dimeric SaPI2 Stl transcriptional regulator== | |
| + | <StructureSection load='8q86' size='340' side='right'caption='[[8q86]], [[Resolution|resolution]] 3.69Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[8q86]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8Q86 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8Q86 FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.69Å</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=8q86 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8q86 OCA], [https://pdbe.org/8q86 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8q86 RCSB], [https://www.ebi.ac.uk/pdbsum/8q86 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8q86 ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/A0FIL5_STAAU A0FIL5_STAAU] | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Bacteria often carry multiple genes encoding anti-phage defense systems, clustered in defense islands and phage satellites. Various unrelated anti-phage defense systems target phage-encoded homologous recombinases (HRs) through unclear mechanisms. Here, we show that the phage satellite SaPI2, which does not encode orthodox anti-phage defense systems, provides antiviral immunity mediated by Stl2, the SaPI2-encoded transcriptional repressor. Stl2 targets and inhibits phage-encoded HRs, including Sak and Sak4, two HRs from the Rad52-like and Rad51-like superfamilies. Remarkably, apo Stl2 forms a collar of dimers oligomerizing as closed rings and as filaments, mimicking the quaternary structure of its targets. Stl2 decorates both Sak rings and Sak4 filaments. The oligomerization of Stl2 as a collar of dimers is necessary for its inhibitory activity both in vitro and in vivo. Our results shed light on the mechanisms underlying antiviral immunity against phages carrying divergent HRs. | ||
| - | + | Phage parasites targeting phage homologous recombinases provide antiviral immunity.,Debiasi-Anders G, Qiao C, Salim A, Li N, Mir-Sanchis I Nat Commun. 2025 Feb 22;16(1):1889. doi: 10.1038/s41467-025-57156-3. PMID:39987160<ref>PMID:39987160</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| + | <div class="pdbe-citations 8q86" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Staphylococcus aureus]] | ||
| + | [[Category: Debiasi-Anders G]] | ||
| + | [[Category: Mir-Sanchis I]] | ||
| + | [[Category: Qiao C]] | ||
Current revision
Trimer of the dimeric SaPI2 Stl transcriptional regulator
| |||||||||||
