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6ew9

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Revision as of 05:55, 30 May 2018

CRYSTAL STRUCTURE OF DEGS STRESS SENSOR PROTEASE IN COMPLEX WITH ACTIVATING DNRLGLVYQF PEPTIDE

Structural highlights

6ew9 is a 6 chain structure with sequence from Ecoli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Gene:	degS, hhoB, htrH, b3235, JW3204 (ECOLI)
Activity:	Peptidase Do, with EC number 3.4.21.107
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]

Publication Abstract from PubMed

Covalent modifications of nonactive site lysine residues by small molecule probes has recently evolved into an important strategy for interrogating biological systems. Here, we report the discovery of a class of bioreactive compounds that covalently modify lysine residues in DegS, the rate limiting protease of the essential bacterial outer membrane stress response pathway. These modifications lead to an allosteric activation and allow the identification of novel residues involved in the allosteric activation circuit. These findings were validated by structural analyses via X-ray crystallography and cell-based reporter systems. We anticipate that our findings are not only relevant for a deeper understanding of the structural basis of allosteric activation in DegS and other HtrA serine proteases but also pinpoint an alternative use of covalent small molecules for probing essential biochemical mechanisms.

Identification of Noncatalytic Lysine Residues from Allosteric Circuits via Covalent Probes.,Bongard J, Lorenz M, Vetter IR, Stege P, Porfetye AT, Schmitz AL, Kaschani F, Wolf A, Koch U, Nussbaumer P, Klebl B, Kaiser M, Ehrmann M ACS Chem Biol. 2018 Apr 16. doi: 10.1021/acschembio.8b00101. PMID:29658704^[3]

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

References

↑ 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
↑ 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
↑ Bongard J, Lorenz M, Vetter IR, Stege P, Porfetye AT, Schmitz AL, Kaschani F, Wolf A, Koch U, Nussbaumer P, Klebl B, Kaiser M, Ehrmann M. Identification of Noncatalytic Lysine Residues from Allosteric Circuits via Covalent Probes. ACS Chem Biol. 2018 Apr 16. doi: 10.1021/acschembio.8b00101. PMID:29658704 doi:http://dx.doi.org/10.1021/acschembio.8b00101

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/6ew9"

@@ Line 3: / Line 3: @@
 <StructureSection load='6ew9' size='340' side='right' caption='[[6ew9]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6ew9]] is a 6 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6EW9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6EW9 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6ew9]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Ecoli Ecoli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6EW9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6EW9 FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene></td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">degS, hhoB, htrH, b3235, JW3204 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 ECOLI])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Peptidase_Do Peptidase Do], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.107 3.4.21.107] </span></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=6ew9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ew9 OCA], [http://pdbe.org/6ew9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6ew9 RCSB], [http://www.ebi.ac.uk/pdbsum/6ew9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6ew9 ProSAT]</span></td></tr>
@@ Line 23: / Line 24: @@
 __TOC__
 </StructureSection>
+[[Category: Ecoli]]
 [[Category: Peptidase Do]]
 [[Category: Porfetye, A T]]

6ew9

From Proteopedia

Revision as of 05:55, 30 May 2018

CRYSTAL STRUCTURE OF DEGS STRESS SENSOR PROTEASE IN COMPLEX WITH ACTIVATING DNRLGLVYQF PEPTIDE

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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