6oay

From Proteopedia

(Difference between revisions)

Current revision

Structure of the hyperactive ClpB mutant K476C, bound to casein, post-state

6oay, resolution 3.30Å

Structural highlights

6oay is a 7 chain structure with sequence from Bos taurus and Escherichia coli K-12. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	Electron Microscopy, Resolution 3.3Å
Ligands:
Experimental data:	Check to display Experimental Data
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CLPB_ECOLI Part of a stress-induced multi-chaperone system, it is involved in the recovery of the cell from heat-induced damage, in cooperation with DnaK, DnaJ and GrpE. Acts before DnaK, in the processing of protein aggregates. Protein binding stimulates the ATPase activity; ATP hydrolysis unfolds the denatured protein aggregates, which probably helps expose new hydrophobic binding sites on the surface of ClpB-bound aggregates, contributing to the solubilization and refolding of denatured protein aggregates by DnaK.^[1] ^[2] ^[3]

Publication Abstract from PubMed

Bacterial ClpB and yeast Hsp104 are homologous Hsp100 protein disaggregases that serve critical functions in proteostasis by solubilizing protein aggregates. Two AAA+ nucleotide binding domains (NBDs) power polypeptide translocation through a central channel comprised of a hexameric spiral of protomers that contact substrate via conserved pore-loop interactions. Here we report cryo-EM structures of a hyperactive ClpB variant bound to the model substrate, casein in the presence of slowly hydrolysable ATPgammaS, which reveal the translocation mechanism. Distinct substrate-gripping interactions are identified for NBD1 and NBD2 pore loops. A trimer of N-terminal domains define a channel entrance that binds the polypeptide substrate adjacent to the topmost NBD1 contact. NBD conformations at the seam interface reveal how ATP hydrolysis-driven substrate disengagement and re-binding are precisely tuned to drive a directional, stepwise translocation cycle.

Structural basis for substrate gripping and translocation by the ClpB AAA+ disaggregase.,Rizo AN, Lin J, Gates SN, Tse E, Bart SM, Castellano LM, DiMaio F, Shorter J, Southworth DR Nat Commun. 2019 Jun 3;10(1):2393. doi: 10.1038/s41467-019-10150-y. PMID:31160557^[4]

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

References

↑ Barnett ME, Zolkiewska A, Zolkiewski M. Structure and activity of ClpB from Escherichia coli. Role of the amino-and -carboxyl-terminal domains. J Biol Chem. 2000 Dec 1;275(48):37565-71. PMID:10982797 doi:http://dx.doi.org/10.1074/jbc.M005211200
↑ Mogk A, Schlieker C, Strub C, Rist W, Weibezahn J, Bukau B. Roles of individual domains and conserved motifs of the AAA+ chaperone ClpB in oligomerization, ATP hydrolysis, and chaperone activity. J Biol Chem. 2003 May 16;278(20):17615-24. Epub 2003 Mar 6. PMID:12624113 doi:http://dx.doi.org/10.1074/jbc.M209686200
↑ Kedzierska S, Akoev V, Barnett ME, Zolkiewski M. Structure and function of the middle domain of ClpB from Escherichia coli. Biochemistry. 2003 Dec 9;42(48):14242-8. PMID:14640692 doi:http://dx.doi.org/10.1021/bi035573d
↑ Rizo AN, Lin J, Gates SN, Tse E, Bart SM, Castellano LM, DiMaio F, Shorter J, Southworth DR. Structural basis for substrate gripping and translocation by the ClpB AAA+ disaggregase. Nat Commun. 2019 Jun 3;10(1):2393. doi: 10.1038/s41467-019-10150-y. PMID:31160557 doi:http://dx.doi.org/10.1038/s41467-019-10150-y

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 3: / Line 3: @@
 <SX load='6oay' size='340' side='right' viewer='molstar' caption='[[6oay]], [[Resolution|resolution]] 3.30&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6oay]] is a 7 chain structure with sequence from [http://en.wikipedia.org/wiki/ ] and [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6OAY OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6OAY FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6oay]] is a 7 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus] and [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6OAY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6OAY FirstGlance]. <br>
-</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>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.3&#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='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[6oax|6oax]], [[6og2|6og2]], [[6og1|6og1]], [[6og3|6og3]]</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=6oay FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6oay OCA], [https://pdbe.org/6oay PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6oay RCSB], [https://www.ebi.ac.uk/pdbsum/6oay PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6oay ProSAT]</span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6oay FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6oay OCA], [http://pdbe.org/6oay PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6oay RCSB], [http://www.ebi.ac.uk/pdbsum/6oay PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6oay ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/CLPB_ECOLI CLPB_ECOLI] Part of a stress-induced multi-chaperone system, it is involved in the recovery of the cell from heat-induced damage, in cooperation with DnaK, DnaJ and GrpE. Acts before DnaK, in the processing of protein aggregates. Protein binding stimulates the ATPase activity; ATP hydrolysis unfolds the denatured protein aggregates, which probably helps expose new hydrophobic binding sites on the surface of ClpB-bound aggregates, contributing to the solubilization and refolding of denatured protein aggregates by DnaK.<ref>PMID:10982797</ref> <ref>PMID:12624113</ref> <ref>PMID:14640692</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 18: / Line 19: @@
 </div>
 <div class="pdbe-citations 6oay" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Heat Shock Protein structures|Heat Shock Protein structures]]
+*[[3D structures of ClpB|3D structures of ClpB]]
 == References ==
 <references/>
@@ Line 23: / Line 28: @@
 </SX>
 [[Category: Bos taurus]]
+[[Category: Escherichia coli K-12]]
 [[Category: Large Structures]]
-[[Category: Bart, S M]]
+[[Category: Bart SM]]
-[[Category: Castellano, L M]]
+[[Category: Castellano LM]]
-[[Category: Dimaio, F]]
+[[Category: Dimaio F]]
-[[Category: Gates, S N]]
+[[Category: Gates SN]]
-[[Category: Lin, J B]]
+[[Category: Lin J-B]]
-[[Category: Rizo, A R]]
+[[Category: Rizo AR]]
-[[Category: Shorter, J]]
+[[Category: Shorter J]]
-[[Category: Southworth, D R]]
+[[Category: Southworth DR]]
-[[Category: Tse, E]]
+[[Category: Tse E]]
-[[Category: Aaa+]]
-[[Category: Chaperone]]
-[[Category: Clpb]]
-[[Category: Disaggregase]]

6oay

From Proteopedia

Current revision

Structure of the hyperactive ClpB mutant K476C, bound to casein, post-state

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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