View source for 5li2


==bacteriophage phi812K1-420 tail sheath and tail tube protein in native tail==
<SX load='5li2' size='340' side='right' viewer='molstar' caption='[[5li2]], [[Resolution|resolution]] 6.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5li2]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_phage_812 Staphylococcus phage 812]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5LI2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5LI2 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]] 6.2&#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=5li2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5li2 OCA], [https://pdbe.org/5li2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5li2 RCSB], [https://www.ebi.ac.uk/pdbsum/5li2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5li2 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/XKDM_BACSU XKDM_BACSU] 
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== Publication Abstract from PubMed ==
Bacteriophages from the family Myoviridae use double-layered contractile tails to infect bacteria. Contraction of the tail sheath enables the tail tube to penetrate through the bacterial cell wall and serve as a channel for the transport of the phage genome into the cytoplasm. However, the mechanisms controlling the tail contraction and genome release of phages with "double-layered" baseplates were unknown. We used cryo-electron microscopy to show that the binding of the Twort-like phage phi812 to the Staphylococcus aureus cell wall requires a 210 degrees rotation of the heterohexameric receptor-binding and tripod protein complexes within its baseplate about an axis perpendicular to the sixfold axis of the tail. This rotation reorients the receptor-binding proteins to point away from the phage head, and also results in disruption of the interaction of the tripod proteins with the tail sheath, hence triggering its contraction. However, the tail sheath contraction of Myoviridae phages is not sufficient to induce genome ejection. We show that the end of the phi812 double-stranded DNA genome is bound to one protein subunit from a connector complex that also forms an interface between the phage head and tail. The tail sheath contraction induces conformational changes of the neck and connector that result in disruption of the DNA binding. The genome penetrates into the neck, but is stopped at a bottleneck before the tail tube. A subsequent structural change of the tail tube induced by its interaction with the S. aureus cell is required for the genome's release.

Structure and genome release of Twort-like Myoviridae phage with a double-layered baseplate.,Novacek J, Siborova M, Benesik M, Pantucek R, Doskar J, Plevka P Proc Natl Acad Sci U S A. 2016 Aug 16;113(33):9351-6. doi:, 10.1073/pnas.1605883113. Epub 2016 Jul 28. PMID:27469164<ref>PMID:27469164</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 5li2" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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[[Category: Large Structures]]
[[Category: Staphylococcus phage 812]]
[[Category: Benesik M]]
[[Category: Doskar J]]
[[Category: Novacek J]]
[[Category: Pantucek R]]
[[Category: Plevka P]]
[[Category: Siborova M]]