3bpq: Difference between revisions

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[[Image:3bpq.png|left|200px]]
==Crystal Structure of RelB-RelE antitoxin-toxin complex from Methanococcus jannaschii==
<StructureSection load='3bpq' size='340' side='right' caption='[[3bpq]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3bpq]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Methanocaldococcus_jannaschii Methanocaldococcus jannaschii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BPQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3BPQ FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">relB3, relB, MJ1103.1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2190 Methanocaldococcus jannaschii]), MJ1103, relE, relE3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2190 Methanocaldococcus jannaschii])</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=3bpq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bpq OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3bpq RCSB], [http://www.ebi.ac.uk/pdbsum/3bpq PDBsum]</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/bp/3bpq_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 ==
Here we present the crystal structure of the Methanococcus jannaschii RelE-RelB (RelBE) toxin-antitoxin (TA) protein complex determined by the MIRAS (multiple isomorphous replacement with anomalous signal) method. The genes encoding this TA system are located in the chromosome of this archaeon and involved in stress response. RelE acts as an endoribonuclease that cleaves mRNA on the ribosome, and we compare the RelBE complex to the known structures of other TA systems belonging to this group and to endoribonucleases. M. jannaschii RelBE forms a heterotetramer with the antitoxin in the centre of the complex, a configuration that differs vastly from the heterotetramer structure of the previously published RelBE from another archaeon, Pyrococcus horikoshii. The long N-terminal alpha-helix of the tightly bound M. jannaschii antitoxin RelB covers the presumed active site of the toxin RelE that is formed by a central beta-sheet, a loop on one side and a C-terminal alpha-helix on the other side. The active site of the M. jannaschii toxin RelE harbours positive charges that are thought to neutralize the negative charges of the substrate mRNA, including Arg62 that was changed to Ser62 by the Escherichia coli expression system, thereby leading to inactive toxin RelE. Comparative studies suggest that Asp43 and His79 are also involved in the activity of the toxin.


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Crystal structure of the antitoxin-toxin protein complex RelB-RelE from Methanococcus jannaschii.,Francuski D, Saenger W J Mol Biol. 2009 Nov 6;393(4):898-908. Epub 2009 Aug 25. PMID:19712680<ref>PMID:19712680</ref>
The line below this paragraph, containing "STRUCTURE_3bpq", creates the "Structure Box" on the page.
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{{STRUCTURE_3bpq|  PDB=3bpq  |  SCENE=  }}


===Crystal Structure of RelB-RelE antitoxin-toxin complex from Methanococcus jannaschii===
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
 
</div>
 
== References ==
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The line below this paragraph, {{ABSTRACT_PUBMED_19712680}}, adds the Publication Abstract to the page
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{{ABSTRACT_PUBMED_19712680}}
 
==About this Structure==
[[3bpq]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Methanocaldococcus_jannaschii Methanocaldococcus jannaschii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BPQ OCA].
 
==Reference==
<ref group="xtra">PMID:019712680</ref><references group="xtra"/>
[[Category: Methanocaldococcus jannaschii]]
[[Category: Methanocaldococcus jannaschii]]
[[Category: Francuski, D.]]
[[Category: Francuski, D.]]

Revision as of 12:48, 21 May 2014

Crystal Structure of RelB-RelE antitoxin-toxin complex from Methanococcus jannaschiiCrystal Structure of RelB-RelE antitoxin-toxin complex from Methanococcus jannaschii

Structural highlights

3bpq is a 4 chain structure with sequence from Methanocaldococcus jannaschii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:relB3, relB, MJ1103.1 (Methanocaldococcus jannaschii), MJ1103, relE, relE3 (Methanocaldococcus jannaschii)
Resources:FirstGlance, OCA, RCSB, PDBsum

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Here we present the crystal structure of the Methanococcus jannaschii RelE-RelB (RelBE) toxin-antitoxin (TA) protein complex determined by the MIRAS (multiple isomorphous replacement with anomalous signal) method. The genes encoding this TA system are located in the chromosome of this archaeon and involved in stress response. RelE acts as an endoribonuclease that cleaves mRNA on the ribosome, and we compare the RelBE complex to the known structures of other TA systems belonging to this group and to endoribonucleases. M. jannaschii RelBE forms a heterotetramer with the antitoxin in the centre of the complex, a configuration that differs vastly from the heterotetramer structure of the previously published RelBE from another archaeon, Pyrococcus horikoshii. The long N-terminal alpha-helix of the tightly bound M. jannaschii antitoxin RelB covers the presumed active site of the toxin RelE that is formed by a central beta-sheet, a loop on one side and a C-terminal alpha-helix on the other side. The active site of the M. jannaschii toxin RelE harbours positive charges that are thought to neutralize the negative charges of the substrate mRNA, including Arg62 that was changed to Ser62 by the Escherichia coli expression system, thereby leading to inactive toxin RelE. Comparative studies suggest that Asp43 and His79 are also involved in the activity of the toxin.

Crystal structure of the antitoxin-toxin protein complex RelB-RelE from Methanococcus jannaschii.,Francuski D, Saenger W J Mol Biol. 2009 Nov 6;393(4):898-908. Epub 2009 Aug 25. PMID:19712680[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

  1. ↑ Francuski D, Saenger W. Crystal structure of the antitoxin-toxin protein complex RelB-RelE from Methanococcus jannaschii. J Mol Biol. 2009 Nov 6;393(4):898-908. Epub 2009 Aug 25. PMID:19712680 doi:S0022-2836(09)01057-2

3bpq, resolution 2.20Å

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