1te0: Difference between revisions
m Protected "1te0" [edit=sysop:move=sysop] |
No edit summary |
||
| Line 1: | Line 1: | ||
[[Image: | ==Structural analysis of DegS, a stress sensor of the bacterial periplasm== | ||
<StructureSection load='1te0' size='340' side='right' caption='[[1te0]], [[Resolution|resolution]] 2.20Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1te0]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TE0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1TE0 FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">DEGS, HHOB, HTRH, B3235, Z4594, ECS4108 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])</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=1te0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1te0 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1te0 RCSB], [http://www.ebi.ac.uk/pdbsum/1te0 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/te/1te0_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 == | |||
Regulated proteolysis is a key event in transmembrane signalling between intracellular compartments. In Escherichia coli the membrane-bound protease DegS has been identified as the periplasmic stress sensor for unfolded outer membrane proteins (OMPs). DegS inititates a proteolytic cascade resulting in the release of sigmaE the transcription factor of periplasmic genes. The crystal structure of DegS protease reported at 2.2 A resolution reveals a trimeric complex with the monomeric protease domain in an inhibited state followed by the inhibitory PDZ domain. Noteably, domain architecture and communication of DegS are remarkably to homologous proteins known to date. Here the domain interface is mechanically locked by three intradomain salt bridges. Co-crystallisation trials in the presence of a 10-residue activating peptide did not result in significant structural intradomain shifts nor distortions in the crystal packing. These observations imply a mode of activation indicative of peptide-induced structural shifts imposed to the protease domain rather than disturbing the PDZ-protease interface. | |||
Structural analysis of DegS, a stress sensor of the bacterial periplasm.,Zeth K FEBS Lett. 2004 Jul 2;569(1-3):351-8. PMID:15225661<ref>PMID:15225661</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
< | |||
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
[[Category: Ravelli, R B.G.]] | [[Category: Ravelli, R B.G.]] | ||
Revision as of 23:18, 29 September 2014
Structural analysis of DegS, a stress sensor of the bacterial periplasmStructural analysis of DegS, a stress sensor of the bacterial periplasm
Structural highlights
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 PubMedRegulated proteolysis is a key event in transmembrane signalling between intracellular compartments. In Escherichia coli the membrane-bound protease DegS has been identified as the periplasmic stress sensor for unfolded outer membrane proteins (OMPs). DegS inititates a proteolytic cascade resulting in the release of sigmaE the transcription factor of periplasmic genes. The crystal structure of DegS protease reported at 2.2 A resolution reveals a trimeric complex with the monomeric protease domain in an inhibited state followed by the inhibitory PDZ domain. Noteably, domain architecture and communication of DegS are remarkably to homologous proteins known to date. Here the domain interface is mechanically locked by three intradomain salt bridges. Co-crystallisation trials in the presence of a 10-residue activating peptide did not result in significant structural intradomain shifts nor distortions in the crystal packing. These observations imply a mode of activation indicative of peptide-induced structural shifts imposed to the protease domain rather than disturbing the PDZ-protease interface. Structural analysis of DegS, a stress sensor of the bacterial periplasm.,Zeth K FEBS Lett. 2004 Jul 2;569(1-3):351-8. PMID:15225661[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
|
| ||||||||||||||||