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[[Image:3ckd.png|left|200px]]
==Crystal structure of the C-terminal domain of the Shigella type III effector IpaH==
<StructureSection load='3ckd' size='340' side='right' caption='[[3ckd]], [[Resolution|resolution]] 2.65&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3ckd]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Shigella_flexneri_2a_str._301 Shigella flexneri 2a str. 301]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CKD OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3CKD FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene><br>
<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ipaH1.4, CP0265 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=198214 Shigella flexneri 2a str. 301])</td></tr>
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Ubiquitin--protein_ligase Ubiquitin--protein ligase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.3.2.19 6.3.2.19] </span></td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3ckd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ckd OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ckd RCSB], [http://www.ebi.ac.uk/pdbsum/3ckd PDBsum], [http://www.topsan.org/Proteins/MCSG/3ckd TOPSAN]</span></td></tr>
<table>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ck/3ckd_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
IpaH proteins are E3 ubiquitin ligases delivered by the type III secretion apparatus into host cells upon infection of humans by the Gram-negative pathogen Shigella flexneri. These proteins comprise a variable leucine-rich repeat-containing N-terminal domain and a conserved C-terminal domain harboring an invariant cysteine residue that is crucial for activity. IpaH homologs are encoded by diverse animal and plant pathogens. Here we demonstrate that the IpaH C-terminal domain carries the catalytic activity for ubiquitin transfer and that the N-terminal domain carries the substrate specificity. The structure of the IpaH C-terminal domain, determined to 2.65-A resolution, represents an all-helical fold bearing no resemblance to previously defined E3 ubiquitin ligases. The conserved and essential cysteine residue lies on a flexible, surface-exposed loop surrounded by conserved acidic residues, two of which are crucial for IpaH activity.


{{STRUCTURE_3ckd|  PDB=3ckd  |  SCENE=  }}
Structure of the Shigella T3SS effector IpaH defines a new class of E3 ubiquitin ligases.,Singer AU, Rohde JR, Lam R, Skarina T, Kagan O, Dileo R, Chirgadze NY, Cuff ME, Joachimiak A, Tyers M, Sansonetti PJ, Parsot C, Savchenko A Nat Struct Mol Biol. 2008 Dec;15(12):1293-301. Epub 2008 Nov 9. PMID:18997778<ref>PMID:18997778</ref>


===Crystal structure of the C-terminal domain of the Shigella type III effector IpaH===
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
</div>
{{ABSTRACT_PUBMED_18997778}}
== References ==
 
<references/>
==About this Structure==
__TOC__
[[3ckd]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Shigella_flexneri_2a_str._301 Shigella flexneri 2a str. 301]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CKD OCA].
</StructureSection>
 
==Reference==
<ref group="xtra">PMID:018997778</ref><references group="xtra"/>
[[Category: Shigella flexneri 2a str. 301]]
[[Category: Shigella flexneri 2a str. 301]]
[[Category: Ubiquitin--protein ligase]]
[[Category: Ubiquitin--protein ligase]]

Revision as of 20:50, 2 October 2014

Crystal structure of the C-terminal domain of the Shigella type III effector IpaH

3ckd, resolution 2.65Å

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