1soz: Difference between revisions

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New page: left|200px<br /><applet load="1soz" size="450" color="white" frame="true" align="right" spinBox="true" caption="1soz, resolution 2.4Å" /> '''Crystal Structure of ...
 
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[[Image:1soz.gif|left|200px]]<br /><applet load="1soz" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1soz, resolution 2.4&Aring;" />
'''Crystal Structure of DegS protease in complex with an activating peptide'''<br />


==Overview==
==Crystal Structure of DegS protease in complex with an activating peptide==
Gram-negative bacteria respond to misfolded proteins in the cell envelope, with the sigmaE-driven expression of periplasmic proteases/chaperones., Activation of sigmaE is controlled by a proteolytic cascade that is, initiated by the DegS protease. DegS senses misfolded protein in the, periplasm, undergoes autoactivation, and cleaves the antisigma factor, RseA. Here, we present the crystal structures of three distinct states of, DegS from E. coli. DegS alone exists in a catalytically inactive form., Binding of stress-signaling peptides to its PDZ domain induces a series of, conformational changes that activates protease function. Backsoaking of, crystals containing the DegS-activator complex revealed the presence of an, active/inactive hybrid structure and demonstrated the reversibility of, activation. Taken together, the structural data illustrate in molecular, detail how DegS acts as a periplasmic stress sensor. Our results suggest a, novel regulatory role for PDZ domains and unveil a novel mechanism of, reversible protease activation.
<StructureSection load='1soz' size='340' side='right'caption='[[1soz]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1soz]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SOZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1SOZ FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1soz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1soz OCA], [https://pdbe.org/1soz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1soz RCSB], [https://www.ebi.ac.uk/pdbsum/1soz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1soz ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/DEGS_ECOLI DEGS_ECOLI] When heat shock or other environmental stresses disrupt protein folding in the periplasm, DegS senses the accumulation of unassembled outer membrane porins (OMPs) and then initiates RseA (anti sigma-E factor) degradation by cleaving it in its periplasmic domain, making it an attractive substrate for subsequent cleavage by RseP. This cascade that ultimately leads to the sigma-E-driven expression of a variety of factors dealing with folding stress in the periplasm and OMP assembly.<ref>PMID:12183369</ref> <ref>PMID:19695325</ref>
== 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/so/1soz_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/main_output.php?pdb_ID=1soz ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1SOZ is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1SOZ OCA].
*[[Proteins from Mycobacterium tuberculosis|Proteins from Mycobacterium tuberculosis]]
 
== References ==
==Reference==
<references/>
Crystal structure of the DegS stress sensor: How a PDZ domain recognizes misfolded protein and activates a protease., Wilken C, Kitzing K, Kurzbauer R, Ehrmann M, Clausen T, Cell. 2004 May 14;117(4):483-94. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15137941 15137941]
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Clausen, T.]]
[[Category: Clausen T]]
[[Category: Ehrmann, M.]]
[[Category: Ehrmann M]]
[[Category: Kitzing, K.]]
[[Category: Kitzing K]]
[[Category: Kurzbauer, R.]]
[[Category: Kurzbauer R]]
[[Category: Wilken, C.]]
[[Category: Wilken C]]
[[Category: htra]]
[[Category: pdz]]
[[Category: protein quality control]]
[[Category: stress response]]
[[Category: upr]]
 
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Wed Nov 21 02:32:14 2007''

Latest revision as of 11:32, 14 February 2024

Crystal Structure of DegS protease in complex with an activating peptideCrystal Structure of DegS protease in complex with an activating peptide

Structural highlights

1soz is a 5 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.4Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

DEGS_ECOLI When heat shock or other environmental stresses disrupt protein folding in the periplasm, DegS senses the accumulation of unassembled outer membrane porins (OMPs) and then initiates RseA (anti sigma-E factor) degradation by cleaving it in its periplasmic domain, making it an attractive substrate for subsequent cleavage by RseP. This cascade that ultimately leads to the sigma-E-driven expression of a variety of factors dealing with folding stress in the periplasm and OMP assembly.[1] [2]

Evolutionary Conservation

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

See Also

References

  1. ↑ Alba BM, Leeds JA, Onufryk C, Lu CZ, Gross CA. DegS and YaeL participate sequentially in the cleavage of RseA to activate the sigma(E)-dependent extracytoplasmic stress response. Genes Dev. 2002 Aug 15;16(16):2156-68. PMID:12183369 doi:10.1101/gad.1008902
  2. ↑ Meltzer M, Hasenbein S, Mamant N, Merdanovic M, Poepsel S, Hauske P, Kaiser M, Huber R, Krojer T, Clausen T, Ehrmann M. Structure, function and regulation of the conserved serine proteases DegP and DegS of Escherichia coli. Res Microbiol. 2009 Nov;160(9):660-6. doi: 10.1016/j.resmic.2009.07.012. Epub, 2009 Aug 18. PMID:19695325 doi:10.1016/j.resmic.2009.07.012

1soz, resolution 2.40Å

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