View source for 9ioz


==Structure of the bacteriophage T5 tail tip complex==
<StructureSection load='9ioz' size='340' side='right'caption='[[9ioz]], [[Resolution|resolution]] 3.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[9ioz]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_phage_T5 Escherichia phage T5]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9IOZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9IOZ 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]] 3.9&#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=9ioz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9ioz OCA], [https://pdbe.org/9ioz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9ioz RCSB], [https://www.ebi.ac.uk/pdbsum/9ioz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9ioz ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/BP140_BPT5 BP140_BPT5] Forms the simplified baseplate, together with the p132 collar protein ring and the cone (DTP-pb9 and BHP-pb3).<ref>PMID:36961893</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
T5 is a siphophage that has been extensively studied by structural and biochemical methods. However, the complete in situ structures of T5 before and after DNA ejection remain unknown. In this study, we used cryo-electron microscopy (cryo-EM) to determine the structures of mature T5 (a laboratory-adapted, fiberless T5 mutant) and urea-treated empty T5 (lacking the tip complex) at near-atomic resolutions. Atomic models of the head, connector complex, tail tube, and tail tip were built for mature T5, and atomic models of the connector complex, comprising the portal protein pb7, adaptor protein p144, and tail terminator protein p142, were built for urea-treated empty T5. Our findings revealed that the aforementioned proteins did not undergo global conformational changes before and after DNA ejection, indicating that these structural features were conserved among most myophages and siphophages. The present study elucidates the underlying mechanisms of siphophage infection and DNA ejection.

Structures of Mature and Urea-Treated Empty Bacteriophage T5: Insights into Siphophage Infection and DNA Ejection.,Peng Y, Tang H, Xiao H, Chen W, Song J, Zheng J, Liu H Int J Mol Sci. 2024 Aug 3;25(15):8479. doi: 10.3390/ijms25158479. PMID:39126049<ref>PMID:39126049</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 9ioz" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Escherichia phage T5]]
[[Category: Large Structures]]
[[Category: Liu HR]]
[[Category: Peng YN]]