2fd4

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<StructureSection load='2fd4' size='340' side='right'caption='[[2fd4]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
<StructureSection load='2fd4' size='340' side='right'caption='[[2fd4]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[2fd4]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_19310 Atcc 19310]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FD4 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2FD4 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[2fd4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_syringae Pseudomonas syringae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FD4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2FD4 FirstGlance]. <br>
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</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=2fd4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fd4 OCA], [http://pdbe.org/2fd4 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2fd4 RCSB], [http://www.ebi.ac.uk/pdbsum/2fd4 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2fd4 ProSAT]</span></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]] 1.8&#8491;</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=2fd4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fd4 OCA], [https://pdbe.org/2fd4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2fd4 RCSB], [https://www.ebi.ac.uk/pdbsum/2fd4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2fd4 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/HPAB2_PSESM HPAB2_PSESM]] Effector protein involved in gene-for-gene resistance in tomato plants. It is recognized by the host Pto resistance protein and elicits Pto and Prf-dependent hypersensitive response (HR) and programmed cell death (PCD), resulting in host immunity. In susceptible plants, acts as a virulence factor by suppressing PCD and HR-based plant immunity. This function requires its E3 ubiquitin ligase activity probably by recruiting E2 enzymes and transferring ubiquitin molecules to cellular proteins involved in regulation of PCD and targeting them for degradation. Also, induces expression of host genes involved in ethylene biosynthesis and signaling, in particular ACO1 and ACO2, encoding the ethylene-forming enzyme ACC oxidase.<ref>PMID:12062102</ref> <ref>PMID:12505984</ref> <ref>PMID:16167902</ref> <ref>PMID:16477026</ref> <ref>PMID:16373536</ref>
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[https://www.uniprot.org/uniprot/HPAB2_PSESM HPAB2_PSESM] Effector protein involved in gene-for-gene resistance in tomato plants. It is recognized by the host Pto resistance protein and elicits Pto and Prf-dependent hypersensitive response (HR) and programmed cell death (PCD), resulting in host immunity. In susceptible plants, acts as a virulence factor by suppressing PCD and HR-based plant immunity. This function requires its E3 ubiquitin ligase activity probably by recruiting E2 enzymes and transferring ubiquitin molecules to cellular proteins involved in regulation of PCD and targeting them for degradation. Also, induces expression of host genes involved in ethylene biosynthesis and signaling, in particular ACO1 and ACO2, encoding the ethylene-forming enzyme ACC oxidase.<ref>PMID:12062102</ref> <ref>PMID:12505984</ref> <ref>PMID:16167902</ref> <ref>PMID:16477026</ref> <ref>PMID:16373536</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The Pseudomonas syringae protein AvrPtoB is translocated into plant cells, where it inhibits immunity-associated programmed cell death (PCD). The structure of a C-terminal domain of AvrPtoB that is essential for anti-PCD activity reveals an unexpected homology to the U-box and RING-finger components of eukaryotic E3 ubiquitin ligases, and we show that AvrPtoB has ubiquitin ligase activity. Mutation of conserved residues involved in the binding of E2 ubiquitin-conjugating enzymes abolishes this activity in vitro, as well as anti-PCD activity in tomato leaves, which dramatically decreases virulence. These results show that Pseudomonas syringae uses a mimic of host E3 ubiquitin ligases to inactivate plant defenses.
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A bacterial inhibitor of host programmed cell death defenses is an E3 ubiquitin ligase.,Janjusevic R, Abramovitch RB, Martin GB, Stebbins CE Science. 2006 Jan 13;311(5758):222-6. Epub 2005 Dec 22. PMID:16373536<ref>PMID:16373536</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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<div class="pdbe-citations 2fd4" style="background-color:#fffaf0;"></div>
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==See Also==
==See Also==
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Atcc 19310]]
 
[[Category: Large Structures]]
[[Category: Large Structures]]
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[[Category: Janjusevic, R]]
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[[Category: Pseudomonas syringae]]
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[[Category: Stebbins, C E]]
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[[Category: Janjusevic R]]
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[[Category: Avrptob]]
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[[Category: Stebbins CE]]
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[[Category: Ligase]]
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[[Category: Pseudomona]]
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[[Category: Ring finger]]
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[[Category: U-box]]
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[[Category: Ubiquitin ligase]]
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Current revision

Crystal Structure of AvrPtoB (436-553)

PDB ID 2fd4

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