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5x90

From Proteopedia

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Current revision

Structure of DotL(656-783)-IcmS-IcmW-LvgA derived from Legionella pneumophila

Structural highlights

5x90 is a 8 chain structure with sequence from Legionella pneumophila subsp. pneumophila str. Philadelphia 1. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.8Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

ICMS_LEGPH Component of the Dot/Icm type IVB secretion system (T4BSS), which is used to inject bacterial effector proteins into eukaryotic host cells (PubMed:15661013, PubMed:18069892, 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). The IcmS/IcmW protein complex plays an important role in protein translocation by interacting with multiple Dot/Icm effector proteins to facilitate their translocation into host cells (PubMed:15661013, PubMed:18069892). Interaction promotes conformational changes in the effector protein, which may facilitate display of a C-terminal translocation signal (PubMed:18069892). May maintain the substrates in a translocation competent form (PubMed:23028312). Required for intracellular growth in host cells, replicative phagosome formation and phagosome trafficking (PubMed:11115108). IcmS is required for IcmW stability (PubMed:15661013, PubMed:29203674).^[1] ^[2] ^[3] ^[4] ^[5] ^[6] ^[7] ^[8]

Publication Abstract from PubMed

Many bacteria, including Legionella pneumophila, rely on the type IV secretion system to translocate a repertoire of effector proteins into the hosts for their survival and growth. Type IV coupling protein (T4CP) is a hexameric ATPase that links translocating substrates to the transenvelope secretion conduit. Yet, how a large number of effector proteins are selectively recruited and processed by T4CPs remains enigmatic. DotL, the T4CP of L. pneumophila, contains an ATPase domain and a C-terminal extension whose function is unknown. Unlike T4CPs involved in plasmid DNA translocation, DotL appeared to function by forming a multiprotein complex with four other proteins. Here, we show that the C-terminal extension of DotL interacts with DotN, IcmS, IcmW and an additionally identified subunit LvgA, and that this pentameric assembly binds Legionella effector proteins. We determined the crystal structure of this assembly and built an architecture of the T4CP holocomplex by combining a homology model of the ATPase domain of DotL. The holocomplex is a hexamer of a bipartite structure composed of a membrane-proximal ATPase domain and a membrane-distal substrate-recognition assembly. The presented information demonstrates the architecture and functional dissection of the multiprotein T4CP complexes and provides important insights into their substrate recruitment and processing.

Architecture of the type IV coupling protein complex of Legionella pneumophila.,Kwak MJ, Kim JD, Kim H, Kim C, Bowman JW, Kim S, Joo K, Lee J, Jin KS, Kim YG, Lee NK, Jung JU, Oh BH Nat Microbiol. 2017 Jul 17;2:17114. doi: 10.1038/nmicrobiol.2017.114. PMID:28714967^[9]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Coers J, Kagan JC, Matthews M, Nagai H, Zuckman DM, Roy CR. Identification of Icm protein complexes that play distinct roles in the biogenesis of an organelle permissive for Legionella pneumophila intracellular growth. Mol Microbiol. 2000 Nov;38(4):719-36. PMID:11115108 doi:10.1046/j.1365-2958.2000.02176.x
↑ Ninio S, Zuckman-Cholon DM, Cambronne ED, Roy CR. The Legionella IcmS-IcmW protein complex is important for Dot/Icm-mediated protein translocation. Mol Microbiol. 2005 Feb;55(3):912-26. PMID:15661013 doi:10.1111/j.1365-2958.2004.04435.x
↑ Vincent CD, Friedman JR, Jeong KC, Buford EC, Miller JL, Vogel JP. Identification of the core transmembrane complex of the Legionella Dot/Icm type IV secretion system. Mol Microbiol. 2006 Dec;62(5):1278-91. doi: 10.1111/j.1365-2958.2006.05446.x. , Epub 2006 Oct 16. PMID:17040490 doi:http://dx.doi.org/10.1111/j.1365-2958.2006.05446.x
↑ Cambronne ED, Roy CR. The Legionella pneumophila IcmSW complex interacts with multiple Dot/Icm effectors to facilitate type IV translocation. PLoS Pathog. 2007 Dec;3(12):e188. PMID:18069892 doi:10.1371/journal.ppat.0030188
↑ Vincent CD, Friedman JR, Jeong KC, Sutherland MC, Vogel JP. Identification of the DotL coupling protein subcomplex of the Legionella Dot/Icm type IV secretion system. Mol Microbiol. 2012 Jul;85(2):378-91. doi: 10.1111/j.1365-2958.2012.08118.x. Epub , 2012 Jun 14. PMID:22694730 doi:http://dx.doi.org/10.1111/j.1365-2958.2012.08118.x
↑ Sutherland MC, Nguyen TL, Tseng V, Vogel JP. The Legionella IcmSW complex directly interacts with DotL to mediate translocation of adaptor-dependent substrates. PLoS Pathog. 2012 Sep;8(9):e1002910. doi: 10.1371/journal.ppat.1002910. Epub 2012 , Sep 13. PMID:23028312 doi:http://dx.doi.org/10.1371/journal.ppat.1002910
↑ Xu J, Xu D, Wan M, Yin L, Wang X, Wu L, Liu Y, Liu X, Zhou Y, Zhu Y. Structural insights into the roles of the IcmS-IcmW complex in the type IVb secretion system of Legionella pneumophila. Proc Natl Acad Sci U S A. 2017 Dec 19;114(51):13543-13548. PMID:29203674 doi:10.1073/pnas.1706883115
↑ Meir A, Mace K, Lukoyanova N, Chetrit D, Hospenthal MK, Redzej A, Roy C, Waksman G. Mechanism of effector capture and delivery by the type IV secretion system from Legionella pneumophila. Nat Commun. 2020 Jun 8;11(1):2864. doi: 10.1038/s41467-020-16681-z. PMID:32513920 doi:http://dx.doi.org/10.1038/s41467-020-16681-z
↑ Kwak MJ, Kim JD, Kim H, Kim C, Bowman JW, Kim S, Joo K, Lee J, Jin KS, Kim YG, Lee NK, Jung JU, Oh BH. Architecture of the type IV coupling protein complex of Legionella pneumophila. Nat Microbiol. 2017 Jul 17;2:17114. doi: 10.1038/nmicrobiol.2017.114. PMID:28714967 doi:http://dx.doi.org/10.1038/nmicrobiol.2017.114

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5x90"

@@ Line 1: / Line 1: @@
 ==Structure of DotL(656-783)-IcmS-IcmW-LvgA derived from Legionella pneumophila==
-<StructureSection load='5x90' size='340' side='right' caption='[[5x90]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
+<StructureSection load='5x90' size='340' side='right'caption='[[5x90]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5x90]] is a 8 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5X90 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5X90 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5x90]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Legionella_pneumophila_subsp._pneumophila_str._Philadelphia_1 Legionella pneumophila subsp. pneumophila str. Philadelphia 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5X90 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5X90 FirstGlance]. <br>
-</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5x90 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5x90 OCA], [http://pdbe.org/5x90 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5x90 RCSB], [http://www.ebi.ac.uk/pdbsum/5x90 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5x90 ProSAT]</span></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8&#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=5x90 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5x90 OCA], [https://pdbe.org/5x90 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5x90 RCSB], [https://www.ebi.ac.uk/pdbsum/5x90 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5x90 ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/ICMS_LEGPH ICMS_LEGPH] Component of the Dot/Icm type IVB secretion system (T4BSS), which is used to inject bacterial effector proteins into eukaryotic host cells (PubMed:15661013, PubMed:18069892, 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). The IcmS/IcmW protein complex plays an important role in protein translocation by interacting with multiple Dot/Icm effector proteins to facilitate their translocation into host cells (PubMed:15661013, PubMed:18069892). Interaction promotes conformational changes in the effector protein, which may facilitate display of a C-terminal translocation signal (PubMed:18069892). May maintain the substrates in a translocation competent form (PubMed:23028312). Required for intracellular growth in host cells, replicative phagosome formation and phagosome trafficking (PubMed:11115108). IcmS is required for IcmW stability (PubMed:15661013, PubMed:29203674).<ref>PMID:11115108</ref> <ref>PMID:15661013</ref> <ref>PMID:17040490</ref> <ref>PMID:18069892</ref> <ref>PMID:22694730</ref> <ref>PMID:23028312</ref> <ref>PMID:29203674</ref> <ref>PMID:32513920</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 19: / Line 22: @@
 __TOC__
 </StructureSection>
-[[Category: Kim, H]]
+[[Category: Large Structures]]
-[[Category: Kim, J D]]
+[[Category: Legionella pneumophila subsp. pneumophila str. Philadelphia 1]]
-[[Category: Kim, Y G]]
+[[Category: Kim H]]
-[[Category: Kwak, M J]]
+[[Category: Kim JD]]
-[[Category: Oh, B H]]
+[[Category: Kim YG]]
-[[Category: Coupling protein complex]]
+[[Category: Kwak MJ]]
-[[Category: Effector translocation]]
+[[Category: Oh BH]]
-[[Category: Protein transport]]
-[[Category: Type iv secretion system]]

5x90

From Proteopedia

Current revision

Structure of DotL(656-783)-IcmS-IcmW-LvgA derived from Legionella pneumophila

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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