6sz9

<table><tr><td colspan='2'>[[6sz9]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Legionella_pneumophila Legionella pneumophila]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6SZ9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6SZ9 FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>

== Function ==

[https://www.uniprot.org/uniprot/DOTL_LEGPH DOTL_LEGPH] Component of the Dot/Icm type IVB secretion system (T4BSS), which is used to inject bacterial effector proteins into eukaryotic host cells (PubMed:17040490, PubMed:22694730, PubMed:32513920). Part of a subcomplex which recruits effector proteins and delivers them to the core transmembrane subcomplex (PubMed:23028312, PubMed:32513920). Plays a central role in the assembly of the subcomplex (PubMed:32513920). Required for the recruitment of IcmS and IcmW to the inner membrane and for the translocation of adapter-dependent substrates (PubMed:23028312). May have ATPase activity (Probable).<ref>PMID:17040490</ref> <ref>PMID:22694730</ref> <ref>PMID:23028312</ref> <ref>PMID:32513920</ref> <ref>PMID:32513920</ref>

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== Publication Abstract from PubMed ==

Legionella pneumophila is a bacterial pathogen that utilises a Type IV secretion (T4S) system to inject effector proteins into human macrophages. Essential to the recruitment and delivery of effectors to the T4S machinery is the membrane-embedded T4 coupling complex (T4CC). Here, we purify an intact T4CC from the Legionella membrane. It contains the DotL ATPase, the DotM and DotN proteins, the chaperone module IcmSW, and two previously uncharacterised proteins, DotY and DotZ. The atomic resolution structure reveals a DotLMNYZ hetero-pentameric core from which the flexible IcmSW module protrudes. Six of these hetero-pentameric complexes may assemble into a 1.6-MDa hexameric nanomachine, forming an inner membrane channel for effectors to pass through. Analysis of multiple cryo EM maps, further modelling and mutagenesis provide working models for the mechanism for binding and delivery of two essential classes of Legionella effectors, depending on IcmSW or DotM, respectively.

Mechanism of effector capture and delivery by the type IV secretion system from Legionella pneumophila.,Meir A, Mace K, Lukoyanova N, Chetrit D, Hospenthal MK, Redzej A, Roy C, Waksman G Nat Commun. 2020 Jun 8;11(1):2864. doi: 10.1038/s41467-020-16681-z. PMID:32513920<ref>PMID:32513920</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 6sz9" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Legionella pneumophila]]

[[Category: Lukoyanova N]]

[[Category: Meir A]]

[[Category: Waksman G]]