6pp7: Difference between revisions

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<StructureSection load='6pp7' size='340' side='right'caption='[[6pp7]], [[Resolution|resolution]] 4.05&Aring;' scene=''>
<StructureSection load='6pp7' size='340' side='right'caption='[[6pp7]], [[Resolution|resolution]] 4.05&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[6pp7]] is a 7 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6PP7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6PP7 FirstGlance]. <br>
<table><tr><td colspan='2'>[[6pp7]] is a 7 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=6PP7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6PP7 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=AGS:PHOSPHOTHIOPHOSPHORIC+ACID-ADENYLATE+ESTER'>AGS</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 4.05&#8491;</td></tr>
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=UNK:UNKNOWN'>UNK</scene></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=AGS:PHOSPHOTHIOPHOSPHORIC+ACID-ADENYLATE+ESTER'>AGS</scene></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=6pp7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6pp7 OCA], [http://pdbe.org/6pp7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6pp7 RCSB], [http://www.ebi.ac.uk/pdbsum/6pp7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6pp7 ProSAT]</span></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=6pp7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6pp7 OCA], [https://pdbe.org/6pp7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6pp7 RCSB], [https://www.ebi.ac.uk/pdbsum/6pp7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6pp7 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/A0A1Q9L861_ECOLX A0A1Q9L861_ECOLX]] ATP-dependent specificity component of the Clp protease. It directs the protease to specific substrates. Can perform chaperone functions in the absence of ClpP.[HAMAP-Rule:MF_00175][SAAS:SAAS01076750]
[https://www.uniprot.org/uniprot/CLPX_ECOLI CLPX_ECOLI] ATP-dependent specificity component of the Clp protease. It directs the protease to specific substrates. It may bind to the lambda O substrate protein and present it to the ClpP protease in a form that can be recognized and readily hydrolyzed by ClpP. Can perform chaperone functions in the absence of ClpP.[HAMAP-Rule:MF_00175]
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
ClpXP is an ATP-dependent protease in which the ClpX AAA+ motor binds, unfolds, and translocates specific protein substrates into the degradation chamber of ClpP. We present cryo-EM studies of the E. coli enzyme that show how asymmetric hexameric rings of ClpX bind symmetric heptameric rings of ClpP and interact with protein substrates. Subunits in the ClpX hexamer assume a spiral conformation and interact with two-residue segments of substrate in the axial channel, as observed for other AAA+ proteases and protein-remodeling machines. Strictly sequential models of ATP hydrolysis and a power stroke that moves two residues of the substrate per translocation step have been inferred from these structural features for other AAA+ unfoldases, but biochemical and single-molecule biophysical studies indicate that ClpXP operates by a probabilistic mechanism in which five to eight residues are translocated for each ATP hydrolyzed. We propose structure-based models that could account for the functional results.


Structures of the ATP-fueled ClpXP proteolytic machine bound to protein substrate.,Fei X, Bell TA, Jenni S, Stinson BM, Baker TA, Harrison SC, Sauer RT Elife. 2020 Feb 28;9. pii: 52774. doi: 10.7554/eLife.52774. PMID:32108573<ref>PMID:32108573</ref>
==See Also==
 
*[[Clp protease 3D structures|Clp protease 3D structures]]
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6pp7" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Fei, X]]
[[Category: Fei X]]
[[Category: Harrison, S C]]
[[Category: Harrison SC]]
[[Category: Jenni, S]]
[[Category: Jenni S]]
[[Category: Sauer, R T]]
[[Category: Sauer RT]]
[[Category: Aaa+ protease complex]]
[[Category: Chaperone]]
[[Category: Protein degradation]]

Latest revision as of 12:26, 20 March 2024

ClpX in ClpX-ClpP complex bound to substrate and ATP-gamma-S, class 2ClpX in ClpX-ClpP complex bound to substrate and ATP-gamma-S, class 2

Structural highlights

6pp7 is a 7 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:Electron Microscopy, Resolution 4.05Å
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CLPX_ECOLI ATP-dependent specificity component of the Clp protease. It directs the protease to specific substrates. It may bind to the lambda O substrate protein and present it to the ClpP protease in a form that can be recognized and readily hydrolyzed by ClpP. Can perform chaperone functions in the absence of ClpP.[HAMAP-Rule:MF_00175]

See Also

6pp7, resolution 4.05Å

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