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- PDB-6uqe: ClpA/ClpP Disengaged State bound to RepA-GFP -

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Basic information

Entry
Database: PDB / ID: 6uqe
TitleClpA/ClpP Disengaged State bound to RepA-GFP
Components
  • (ATP-dependent Clp protease ...) x 2
  • (RepA-GFP) x 2
KeywordsCHAPERONE / AAA+ / Protease / Hsp100 / ATPase
Function / homology
Function and homology information


HslUV protease complex / endopeptidase Clp complex / endopeptidase Clp / positive regulation of programmed cell death / response to temperature stimulus / ATP-dependent peptidase activity / protein quality control for misfolded or incompletely synthesized proteins / protein unfolding / serine-type peptidase activity / proteasomal protein catabolic process ...HslUV protease complex / endopeptidase Clp complex / endopeptidase Clp / positive regulation of programmed cell death / response to temperature stimulus / ATP-dependent peptidase activity / protein quality control for misfolded or incompletely synthesized proteins / protein unfolding / serine-type peptidase activity / proteasomal protein catabolic process / response to radiation / cellular response to heat / ATPase binding / response to heat / response to oxidative stress / serine-type endopeptidase activity / ATP hydrolysis activity / proteolysis / ATP binding / membrane / identical protein binding / cytosol / cytoplasm
Similarity search - Function
ATP-dependent Clp protease ATP-binding subunit ClpA / ClpP, Ser active site / Endopeptidase Clp serine active site. / ClpA/B, conserved site 2 / Chaperonins clpA/B signature 2. / 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 ...ATP-dependent Clp protease ATP-binding subunit ClpA / ClpP, Ser active site / Endopeptidase Clp serine active site. / ClpA/B, conserved site 2 / Chaperonins clpA/B signature 2. / 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 / ClpA/B, conserved site 1 / Chaperonins clpA/B signature 1. / ClpA/ClpB, AAA lid domain / AAA lid domain / Clp amino terminal domain, pathogenicity island component / Clp repeat (R) domain profile. / Clp, repeat (R) domain / Clp, N-terminal domain superfamily / ClpA/B family / Clp ATPase, C-terminal / AAA domain (Cdc48 subfamily) / C-terminal, D2-small domain, of ClpB protein / C-terminal, D2-small domain, of ClpB protein / 2-enoyl-CoA Hydratase; Chain A, domain 1 / 2-enoyl-CoA Hydratase; Chain A, domain 1 / ClpP/crotonase-like domain superfamily / ATPase family associated with various cellular activities (AAA) / ATPase, AAA-type, core / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / Alpha-Beta Complex / P-loop containing nucleoside triphosphate hydrolase / Alpha Beta
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / ATP-dependent Clp protease proteolytic subunit / ATP-dependent Clp protease ATP-binding subunit ClpA / ATP-dependent Clp protease proteolytic subunit / ATP-dependent Clp protease ATP-binding subunit ClpA
Similarity search - Component
Biological speciesEscherichia coli K-12 (bacteria)
unidentified (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å
AuthorsLopez, K.L. / Rizo, A.R. / Southworth, D.R.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) United States
CitationJournal: Nat Struct Mol Biol / Year: 2020
Title: Conformational plasticity of the ClpAP AAA+ protease couples protein unfolding and proteolysis.
Authors: Kyle E Lopez / Alexandrea N Rizo / Eric Tse / JiaBei Lin / Nathaniel W Scull / Aye C Thwin / Aaron L Lucius / James Shorter / Daniel R Southworth /
Abstract: The ClpAP complex is a conserved bacterial protease that unfolds and degrades proteins targeted for destruction. The ClpA double-ring hexamer powers substrate unfolding and translocation into the ...The ClpAP complex is a conserved bacterial protease that unfolds and degrades proteins targeted for destruction. The ClpA double-ring hexamer powers substrate unfolding and translocation into the ClpP proteolytic chamber. Here, we determined high-resolution structures of wild-type Escherichia coli ClpAP undergoing active substrate unfolding and proteolysis. A spiral of pore loop-substrate contacts spans both ClpA AAA+ domains. Protomers at the spiral seam undergo nucleotide-specific rearrangements, supporting substrate translocation. IGL loops extend flexibly to bind the planar, heptameric ClpP surface with the empty, symmetry-mismatched IGL pocket maintained at the seam. Three different structures identify a binding-pocket switch by the IGL loop of the lowest positioned protomer, involving release and re-engagement with the clockwise pocket. This switch is coupled to a ClpA rotation and a network of conformational changes across the seam, suggesting that ClpA can rotate around the ClpP apical surface during processive steps of translocation and proteolysis.
History
DepositionOct 18, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 22, 2020Provider: repository / Type: Initial release
Revision 1.1May 6, 2020Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title ..._citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.2May 27, 2020Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.3Mar 16, 2022Group: Author supporting evidence / Database references / Category: database_2 / pdbx_audit_support
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_audit_support.funding_organization

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Structure visualization

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Assembly

Deposited unit
A: ATP-dependent Clp protease ATP-binding subunit ClpA
B: ATP-dependent Clp protease ATP-binding subunit ClpA
C: ATP-dependent Clp protease ATP-binding subunit ClpA
D: ATP-dependent Clp protease ATP-binding subunit ClpA
E: ATP-dependent Clp protease ATP-binding subunit ClpA
F: ATP-dependent Clp protease ATP-binding subunit ClpA
G: 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
O: ATP-dependent Clp protease proteolytic subunit
P: ATP-dependent Clp protease proteolytic subunit
Q: ATP-dependent Clp protease proteolytic subunit
R: ATP-dependent Clp protease proteolytic subunit
S: ATP-dependent Clp protease proteolytic subunit
T: ATP-dependent Clp protease proteolytic subunit
X: RepA-GFP
Y: RepA-GFP
hetero molecules


Theoretical massNumber of molelcules
Total (without water)693,46834
Polymers687,66922
Non-polymers5,79912
Water0
1


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

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Components

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ATP-dependent Clp protease ... , 2 types, 20 molecules ABCDEFGHIJKLMNOPQRST

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


Mass: 64204.504 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli K-12 (bacteria) / Gene: clpA / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: A0A4Y9BNB2, UniProt: P0ABH9*PLUS
#2: Protein
ATP-dependent Clp protease proteolytic subunit / / Endopeptidase Clp


Mass: 21472.762 Da / Num. of mol.: 14
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli K-12 (bacteria) / Gene: clpP / Production host: Escherichia coli BL21(DE3) (bacteria)
References: UniProt: A0A0K4NM46, UniProt: P0A6G7*PLUS, endopeptidase Clp

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Protein/peptide , 2 types, 2 molecules XY

#3: Protein/peptide RepA-GFP


Mass: 869.063 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) unidentified (others) / Production host: Escherichia coli BL21(DE3) (bacteria)
#4: Protein/peptide RepA-GFP


Mass: 954.168 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) unidentified (others) / Production host: Escherichia coli BL21(DE3) (bacteria)

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Non-polymers , 2 types, 12 molecules

#5: Chemical
ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE / Adenosine diphosphate


Mass: 427.201 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Comment: ADP, energy-carrying molecule*YM
#6: 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.: 7 / Source method: obtained synthetically / Formula: C10H16N5O12P3S / Comment: ATP-gamma-S, energy-carrying molecule analogue*YM

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Details

Has ligand of interestN

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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: ClpAP / Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT
Molecular weightValue: 0.84 MDa / Experimental value: NO
Source (natural)Organism: Escherichia coli K-12 (bacteria)
Source (recombinant)Organism: Escherichia coli BL21(DE3) (bacteria)
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 FIELDBright-field microscopy / Nominal magnification: 105000 X / Calibrated magnification: 58616 X / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 6 sec. / Electron dose: 69 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)
Image scansWidth: 11520 / Height: 8184

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Processing

EM softwareName: cryoSPARC / Version: 2 / Category: 3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 169000 / Symmetry type: POINT

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