View source for 7ubb


==Structure of RecT protein from Listeria innoccua phage A118 in complex with 83-mer ssDNA==
<StructureSection load='7ubb' size='340' side='right'caption='[[7ubb]], [[Resolution|resolution]] 4.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7ubb]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Listeria_innocua_Clip11262 Listeria innocua Clip11262]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7UBB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7UBB 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]] 4.5&#8491;</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=7ubb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7ubb OCA], [https://pdbe.org/7ubb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7ubb RCSB], [https://www.ebi.ac.uk/pdbsum/7ubb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7ubb ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q92FL9_LISIN Q92FL9_LISIN] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Some bacteriophage encode a recombinase that catalyzes single-stranded DNA annealing (SSA). These proteins are apparently related to RAD52, the primary human SSA protein. The best studied protein, Redbeta from bacteriophage lambda, binds weakly to ssDNA, not at all to dsDNA, but tightly to a duplex intermediate of annealing formed when two complementary DNA strands are added to the protein sequentially. We used single particle cryo-electron microscopy (cryo-EM) to determine a 3.4 A structure of a Redbeta homolog from a prophage of Listeria innocua in complex with two complementary 83mer oligonucleotides. The structure reveals a helical protein filament bound to a DNA duplex that is highly extended and unwound. Native mass spectrometry confirms that the complex seen by cryo-EM is the predominant species in solution. The protein shares a common core fold with RAD52 and a similar mode of ssDNA-binding. These data provide insights into the mechanism of protein-catalyzed SSA.

Structure of a RecT/Redbeta family recombinase in complex with a duplex intermediate of DNA annealing.,Caldwell BJ, Norris AS, Karbowski CF, Wiegand AM, Wysocki VH, Bell CE Nat Commun. 2022 Dec 21;13(1):7855. doi: 10.1038/s41467-022-35572-z. PMID:36543802<ref>PMID:36543802</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7ubb" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Listeria innocua Clip11262]]
[[Category: Bell CE]]
[[Category: Caldwell BJ]]