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- PDB-8e91: Cryo-EM structure of substrate-free ClpX.ClpP -

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Basic information

Entry
Database: PDB / ID: 8.0E+91
TitleCryo-EM structure of substrate-free ClpX.ClpP
Components
  • ATP-dependent Clp protease ATP-binding subunit ClpX
  • ATP-dependent Clp protease proteolytic subunit
KeywordsCHAPERONE / AAA+ protease / ClpXP / substrate-free
Function / homology
Function and homology information


HslUV protease complex / endopeptidase Clp / endopeptidase Clp complex / positive regulation of programmed cell death / response to temperature stimulus / ATP-dependent peptidase activity / protein quality control for misfolded or incompletely synthesized proteins / proteasomal protein catabolic process / serine-type peptidase activity / proteolysis involved in protein catabolic process ...HslUV protease complex / endopeptidase Clp / endopeptidase Clp complex / positive regulation of programmed cell death / response to temperature stimulus / ATP-dependent peptidase activity / protein quality control for misfolded or incompletely synthesized proteins / proteasomal protein catabolic process / serine-type peptidase activity / proteolysis involved in protein catabolic process / ATP-dependent protein folding chaperone / response to radiation / unfolded protein binding / peptidase activity / response to heat / ATPase binding / protein dimerization activity / cell division / serine-type endopeptidase activity / ATP hydrolysis activity / proteolysis / zinc ion binding / ATP binding / identical protein binding / membrane / cytosol
Similarity search - Function
Zinc finger, ClpX C4-type superfamily / ClpX C4-type zinc finger / Clp protease, ATP-binding subunit ClpX, bacteria / ClpX C4-type zinc finger / Clp protease, ATP-binding subunit ClpX / Zinc finger, ClpX C4-type / ClpX zinc binding (ZB) domain profile. / : / ClpP, Ser active site / Endopeptidase Clp serine active site. ...Zinc finger, ClpX C4-type superfamily / ClpX C4-type zinc finger / Clp protease, ATP-binding subunit ClpX, bacteria / ClpX C4-type zinc finger / Clp protease, ATP-binding subunit ClpX / Zinc finger, ClpX C4-type / ClpX zinc binding (ZB) domain profile. / : / ClpP, Ser active site / Endopeptidase Clp serine active site. / ClpP, histidine active site / Endopeptidase Clp histidine active site. / ATP-dependent Clp protease proteolytic subunit / Clp protease proteolytic subunit /Translocation-enhancing protein TepA / Clp protease / Clp ATPase, C-terminal / C-terminal, D2-small domain, of ClpB protein / C-terminal, D2-small domain, of ClpB protein / AAA domain (Cdc48 subfamily) / ClpP/crotonase-like domain superfamily / ATPase, AAA-type, core / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / ATP-dependent Clp protease ATP-binding subunit ClpX / ATP-dependent Clp protease proteolytic subunit
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.57 Å
AuthorsGhanbarpour, A. / Davis, J.H. / Sauer, R.T.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) United States
CitationJournal: Nat Commun / Year: 2023
Title: Cryo-EM structure of substrate-free DNClpX.ClpP
Authors: Ghanbarpour, A. / Cohen, S. / Davis, J.H. / Sauer, R.T.
History
DepositionAug 26, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 8, 2023Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: ATP-dependent Clp protease ATP-binding subunit ClpX
B: ATP-dependent Clp protease ATP-binding subunit ClpX
C: ATP-dependent Clp protease ATP-binding subunit ClpX
D: ATP-dependent Clp protease ATP-binding subunit ClpX
E: ATP-dependent Clp protease ATP-binding subunit ClpX
F: ATP-dependent Clp protease ATP-binding subunit ClpX
H: ATP-dependent Clp protease proteolytic subunit
I: ATP-dependent Clp protease proteolytic subunit
J: ATP-dependent Clp protease proteolytic subunit
K: ATP-dependent Clp protease proteolytic subunit
L: ATP-dependent Clp protease proteolytic subunit
M: ATP-dependent Clp protease proteolytic subunit
N: ATP-dependent Clp protease proteolytic subunit
h: ATP-dependent Clp protease proteolytic subunit
i: ATP-dependent Clp protease proteolytic subunit
j: ATP-dependent Clp protease proteolytic subunit
k: ATP-dependent Clp protease proteolytic subunit
l: ATP-dependent Clp protease proteolytic subunit
m: ATP-dependent Clp protease proteolytic subunit
n: ATP-dependent Clp protease proteolytic subunit
hetero molecules


Theoretical massNumber of molelcules
Total (without water)610,07429
Polymers607,05320
Non-polymers3,0209
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
ATP-dependent Clp protease ATP-binding subunit ClpX


Mass: 46414.848 Da / Num. of mol.: 6 / Mutation: K408E
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: clpX / Production host: Escherichia coli (E. coli) / References: UniProt: C3TLS7
#2: Protein
ATP-dependent Clp protease proteolytic subunit / Caseinolytic protease / Endopeptidase Clp / Heat shock protein F21.5 / Protease Ti


Mass: 23468.869 Da / Num. of mol.: 14 / Fragment: UNP residues 16-207
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: clpP, lopP, b0437, JW0427 / Production host: Escherichia coli (E. coli) / References: UniProt: P0A6G7, endopeptidase Clp
#3: Chemical
ChemComp-AGS / PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / ATP-GAMMA-S / ADENOSINE 5'-(3-THIOTRIPHOSPHATE) / ADENOSINE 5'-(GAMMA-THIOTRIPHOSPHATE) / ADENOSINE-5'-DIPHOSPHATE MONOTHIOPHOSPHATE


Mass: 523.247 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C10H16N5O12P3S / Feature type: SUBJECT OF INVESTIGATION / Comment: ATP-gamma-S, energy-carrying molecule analogue*YM
#4: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#5: Chemical ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Feature type: SUBJECT OF INVESTIGATION / Comment: ADP, energy-carrying molecule*YM
Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: ClpXP AAA protease / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Escherichia coli (E. coli)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1750 nm / Nominal defocus min: 300 nm / Cs: 2.7 mm
Image recordingElectron dose: 52.67 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1cryoSPARCv.3.3.1particle selection
4cryoSPARCv.3.3.1CTF correction
7Coot9.4model fitting
9PHENIXmodel refinement
10cryoSPARCv.3.3.1initial Euler assignment
11cryoSPARCv.3.3.1final Euler assignment
CTF correctionDetails: Patch CTF estimation, cryoSPARC / Type: NONE
3D reconstructionResolution: 2.57 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 214397 / Details: GSFSC resolution after autotightening / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Atomic model buildingPDB-ID: 6WRF

6wrf


Accession code: 6WRF / Source name: PDB / Type: experimental model

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