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3jza

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{{STRUCTURE_3jza| PDB=3jza | SCENE= }}
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==Crystal structure of human Rab1b in complex with the GEF domain of DrrA/SidM from Legionella pneumophila==
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===Crystal structure of human Rab1b in complex with the GEF domain of DrrA/SidM from Legionella pneumophila===
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<StructureSection load='3jza' size='340' side='right' caption='[[3jza]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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{{ABSTRACT_PUBMED_20064470}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3jza]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://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=3JZA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3JZA FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3jz9|3jz9]]</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">RAB1B ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), lpg2464 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=272624 Legionella pneumophila subsp. pneumophila str. Philadelphia 1])</td></tr>
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<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=3jza FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3jza OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3jza RCSB], [http://www.ebi.ac.uk/pdbsum/3jza PDBsum]</span></td></tr>
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</table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/jz/3jza_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Prenylated Rab proteins exist in the cytosol as soluble, high-affinity complexes with GDI that need to be disrupted for membrane attachment and targeting of Rab proteins. The Legionella pneumophila protein DrrA displaces GDI from Rab1:GDI complexes, incorporating Rab1 into Legionella-containing vacuoles and activating Rab1 by exchanging GDP for GTP. Here, we present the crystal structure of a complex between the GEF domain of DrrA and Rab1 and a detailed kinetic analysis of this exchange. DrrA efficiently catalyzes nucleotide exchange and mimics the general nucleotide exchange mechanism of mammalian GEFs for Ras-like GTPases. We show that the GEF activity of DrrA is sufficient to displace prenylated Rab1 from the Rab1:GDI complex. Thus, apparent GDI displacement by DrrA is linked directly to nucleotide exchange, suggesting a basic model for GDI displacement and specificity of Rab localization that does not require discrete GDI displacement activity.
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==Function==
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RabGDI displacement by DrrA from Legionella is a consequence of its guanine nucleotide exchange activity.,Schoebel S, Oesterlin LK, Blankenfeldt W, Goody RS, Itzen A Mol Cell. 2009 Dec 25;36(6):1060-72. PMID:20064470<ref>PMID:20064470</ref>
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[[http://www.uniprot.org/uniprot/RAB1B_HUMAN RAB1B_HUMAN]] Protein transport. Regulates vesicular transport between the endoplasmic reticulum and successive Golgi compartments.<ref>PMID:9437002</ref> [[http://www.uniprot.org/uniprot/Q5ZSQ3_LEGPH Q5ZSQ3_LEGPH]] Virulence effector that plays a key role in hijacking the host vesicular trafficking by recruiting the small guanosine triphosphatase (GTPase) Rab1 to the cytosolic face of the Legionella-containing vacuole (LCVs). Acts as a GDP-GTP exchange factor (GEF) for the small GTPase Rab1 (RAB1A, RAB1B or RAB1C), thereby converting Rab1 to an active GTP-bound state, leading to the incorporation of Rab1 into LCVs. Also shows RabGDI displacement factor (GDF) activity; however, this probably represents a passive activity following the GEF activity. Also acts as an adenylyltransferase by mediating the addition of adenosine 5'-monophosphate (AMP) to 'Tyr-77' of host RAB1B, thereby rendering RAB1B constitutively active. Also has adenylyltransferase activity towards Rab6 and Rab35. Also displays guanylyltransferase activity by mediating the addition of guanosine 5'-monophosphate (GMP) to host RAB1B in vitro; however such activity remains uncertain in vivo. Specifically binds phosphatidylinositol 4-phosphate (PtdIns(4)P) lipids on the cytosolic surface of the phagosomal membrane shortly after infection.<ref>PMID:16824952</ref><ref>PMID:17947549</ref><ref>PMID:21822290</ref><ref>PMID:20064470</ref><ref>PMID:19942850</ref><ref>PMID:20176951</ref>
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[3jza]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://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=3JZA OCA].
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</div>
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:020064470</ref><ref group="xtra">PMID:017947549</ref><ref group="xtra">PMID:017952054</ref><references group="xtra"/><references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Legionella pneumophila subsp. pneumophila str. philadelphia 1]]
[[Category: Legionella pneumophila subsp. pneumophila str. philadelphia 1]]
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[[Category: Blankenfeldt, W.]]
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[[Category: Blankenfeldt, W]]
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[[Category: Goody, R S.]]
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[[Category: Goody, R S]]
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[[Category: Itzen, A.]]
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[[Category: Itzen, A]]
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[[Category: Oesterlin, L K.]]
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[[Category: Oesterlin, L K]]
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[[Category: Schoebel, S.]]
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[[Category: Schoebel, S]]
[[Category: Gdf]]
[[Category: Gdf]]
[[Category: Gdi]]
[[Category: Gdi]]

Revision as of 17:41, 18 December 2014

Crystal structure of human Rab1b in complex with the GEF domain of DrrA/SidM from Legionella pneumophila

3jza, resolution 1.80Å

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