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3q9o

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==Full-length Cholix toxin from Vibrio cholerae in complex with NAD==
==Full-length Cholix toxin from Vibrio cholerae in complex with NAD==
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<StructureSection load='3q9o' size='340' side='right' caption='[[3q9o]], [[Resolution|resolution]] 1.79&Aring;' scene=''>
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<StructureSection load='3q9o' size='340' side='right'caption='[[3q9o]], [[Resolution|resolution]] 1.79&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[3q9o]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Vibrio_cholerae Vibrio cholerae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3Q9O OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3Q9O FirstGlance]. <br>
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<table><tr><td colspan='2'>[[3q9o]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Vibrio_cholerae Vibrio cholerae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3Q9O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3Q9O 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=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.793&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2q5t|2q5t]], [[2q6m|2q6m]], [[3ess|3ess]]</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NAD:NICOTINAMIDE-ADENINE-DINUCLEOTIDE'>NAD</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">chxa, toxA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=666 Vibrio cholerae])</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3q9o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3q9o OCA], [https://pdbe.org/3q9o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3q9o RCSB], [https://www.ebi.ac.uk/pdbsum/3q9o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3q9o ProSAT]</span></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=3q9o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3q9o OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3q9o RCSB], [http://www.ebi.ac.uk/pdbsum/3q9o PDBsum]</span></td></tr>
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</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/Q5EK40_VIBCH Q5EK40_VIBCH]] An NAD-dependent ADP-ribosyltransferase (ADPRT), it catalyzes the transfer of the ADP-ribosyl moiety of oxidized NAD onto eukaryotic elongation factor 2 (eEF-2) thus arresting protein synthesis. It probably uses the eukaryotic prolow-density lipoprotein receptor-related protein 1 (LRP1) to enter mouse cells, although there seems to be at least one other receptor as well. Is active against mouse fibroblasts, Chinese hamster ovary eEF-2, brine shrimp (Artemia spp. nauplii) and upon expression in S.cerevisiae.<ref>PMID:18276581</ref> <ref>PMID:19793133</ref>
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[https://www.uniprot.org/uniprot/CHXA_VIBCL CHXA_VIBCL] An NAD-dependent ADP-ribosyltransferase (ADPRT), it catalyzes the transfer of the ADP-ribosyl moiety of oxidized NAD onto eukaryotic elongation factor 2 (eEF-2) thus arresting protein synthesis. It probably uses the eukaryotic prolow-density lipoprotein receptor-related protein 1 (LRP1) to enter mouse cells, although there seems to be at least one other receptor as well. Is active against mouse fibroblasts, Chinese hamster ovary eEF-2, brine shrimp (Artemia spp. nauplii) and upon expression in S.cerevisiae.<ref>PMID:18276581</ref> <ref>PMID:19793133</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Certain Vibrio cholerae strains produce cholix, a potent protein toxin that has diphthamide-specific ADP-ribosyltransferase activity against eukaryotic elongation factor 2. Here we present a 1.8A crystal structure of cholix in complex with its natural substrate, nicotinamide adenine dinucleotide (NAD+). We also substituted hallmark catalytic residues by site-directed mutagenesis and analyzed both NAD+ binding and ADPribosyltransferase activity using a fluorescence-based assay. These data are the basis for a new kinetic model of cholix toxin activity. Further, the new structural data serve as a reference for continuing inhibitor development for this toxin class.
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The 1.8 angstrom cholix toxin crystal structure in complex with NAD and evidence for a new kinetic model.,Fieldhouse RJ, Jorgensen R, Lugo MR, Merrill AR J Biol Chem. 2012 Apr 25. PMID:22535961<ref>PMID:22535961</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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==See Also==
==See Also==
*[[Exotoxin|Exotoxin]]
*[[Exotoxin|Exotoxin]]
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*[[Exotoxin 3D structures|Exotoxin 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Large Structures]]
[[Category: Vibrio cholerae]]
[[Category: Vibrio cholerae]]
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[[Category: Fieldhouse, R J]]
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[[Category: Fieldhouse RJ]]
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[[Category: Jorgensen, R]]
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[[Category: Jorgensen R]]
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[[Category: Merrill, A R]]
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[[Category: Merrill AR]]
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[[Category: Adp-ribosylating factor]]
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[[Category: Alpha-beta complex]]
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[[Category: Beta barrel]]
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[[Category: Diphthamide on eukaryotic elongation factor 2]]
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[[Category: Receptor binding domain]]
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[[Category: Six alpha-helix bundle]]
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[[Category: Transferase]]
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[[Category: Translocation]]
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Current revision

Full-length Cholix toxin from Vibrio cholerae in complex with NAD

PDB ID 3q9o

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