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1gvn

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==Crystal Structure of the Plasmid Maintenance System epsilon/zeta: Meachnism of toxin inactivation and toxin function==
==Crystal Structure of the Plasmid Maintenance System epsilon/zeta: Meachnism of toxin inactivation and toxin function==
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<StructureSection load='1gvn' size='340' side='right' caption='[[1gvn]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
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<StructureSection load='1gvn' size='340' side='right'caption='[[1gvn]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[1gvn]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Streptococcus_pyogenes Streptococcus pyogenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GVN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1GVN FirstGlance]. <br>
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<table><tr><td colspan='2'>[[1gvn]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptococcus_pyogenes Streptococcus pyogenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GVN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1GVN 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=SO4:SULFATE+ION'>SO4</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]] 1.95&#8491;</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=1gvn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gvn OCA], [http://pdbe.org/1gvn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1gvn RCSB], [http://www.ebi.ac.uk/pdbsum/1gvn PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1gvn ProSAT]</span></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=SO4:SULFATE+ION'>SO4</scene></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=1gvn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gvn OCA], [https://pdbe.org/1gvn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1gvn RCSB], [https://www.ebi.ac.uk/pdbsum/1gvn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1gvn ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/EATX_STRPY EATX_STRPY]] Antitoxin component of a toxin-antitoxin (TA) module. Neutralizes the toxic effect of cognate zeta toxin. Part of a postsegregational killing (PSK) system involved in the killing of plasmid-free cells. Continuous synthesis of the epsilon antitoxin is required to counteract the zeta toxin.[REFERENCE:7] [[http://www.uniprot.org/uniprot/ZTOX_STRPY ZTOX_STRPY]] Toxic component of a toxin-antitoxin (TA) module. Phosphorylates UDP-N-acetyl-D-glucosamine (UNAG) on the 3'-hydroxyl group of the N-acetyl-D-glucosamine moiety, yielding UNAG-3P. UNAG-3P inhibits MurA, the first committed step in cell wall synthesis, which is then blocked. Phosphorylation is inhibited by cognate epsilon antitoxin. Part of a postsegregational killing (PSK) system involved in the killing of plasmid-free cells. The zeta toxin induces programmed cell death.[REFERENCE:7]
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[https://www.uniprot.org/uniprot/EATX_STRPY EATX_STRPY] Antitoxin component of a toxin-antitoxin (TA) module. Neutralizes the toxic effect of cognate zeta toxin. Part of a postsegregational killing (PSK) system involved in the killing of plasmid-free cells. Continuous synthesis of the epsilon antitoxin is required to counteract the zeta toxin.[REFERENCE:7]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Large Structures]]
[[Category: Streptococcus pyogenes]]
[[Category: Streptococcus pyogenes]]
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[[Category: Alonso, J C]]
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[[Category: Alonso JC]]
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[[Category: Meinhart, A]]
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[[Category: Meinhart A]]
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[[Category: Saenger, W]]
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[[Category: Saenger W]]
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[[Category: Straeter, N]]
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[[Category: Straeter N]]
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[[Category: Plasmid]]
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[[Category: Postsegregational killing system]]
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Crystal Structure of the Plasmid Maintenance System epsilon/zeta: Meachnism of toxin inactivation and toxin function

PDB ID 1gvn

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