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- PDB-3zq1: Visualizing GroEL-ES in the Act of Encapsulating a Non-Native Sub... -

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Basic information

Entry
Database: PDB / ID: 3zq1
TitleVisualizing GroEL-ES in the Act of Encapsulating a Non-Native Substrate Protein
Components
  • 10 KDA CHAPERONIN
  • 60 KDA CHAPERONIN
KeywordsCHAPERONE / RUBISCO / ENCAPSULATION
Function / homology
Function and homology information


GroEL-GroES complex / chaperonin ATPase / virion assembly / chaperone cofactor-dependent protein refolding / protein folding chaperone / isomerase activity / ATP-dependent protein folding chaperone / response to radiation / unfolded protein binding / protein folding ...GroEL-GroES complex / chaperonin ATPase / virion assembly / chaperone cofactor-dependent protein refolding / protein folding chaperone / isomerase activity / ATP-dependent protein folding chaperone / response to radiation / unfolded protein binding / protein folding / response to heat / protein-folding chaperone binding / protein refolding / magnesium ion binding / ATP hydrolysis activity / ATP binding / membrane / identical protein binding / metal ion binding / cytosol
Similarity search - Function
Chaperonin GroES, conserved site / Chaperonins cpn10 signature. / Chaperonin 10 Kd subunit / GroES chaperonin family / GroES chaperonin superfamily / Chaperonin 10 Kd subunit / Chaperonin Cpn60, conserved site / Chaperonins cpn60 signature. / Chaperonin Cpn60/GroEL / GroEL-like equatorial domain superfamily ...Chaperonin GroES, conserved site / Chaperonins cpn10 signature. / Chaperonin 10 Kd subunit / GroES chaperonin family / GroES chaperonin superfamily / Chaperonin 10 Kd subunit / Chaperonin Cpn60, conserved site / Chaperonins cpn60 signature. / Chaperonin Cpn60/GroEL / GroEL-like equatorial domain superfamily / TCP-1-like chaperonin intermediate domain superfamily / GroEL-like apical domain superfamily / TCP-1/cpn60 chaperonin family / Chaperonin Cpn60/GroEL/TCP-1 family / GroES-like superfamily
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / Chaperonin GroEL / Co-chaperonin GroES
Similarity search - Component
Biological speciesESCHERICHIA COLI BL21 (bacteria)
ESCHERICHIA COLI K-12 (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 15.9 Å
AuthorsChen, D.-H. / Madan, D. / Weaver, J. / Lin, Z. / Schroder, G.F. / Chiu, W. / Rye, H.S.
CitationJournal: Cell / Year: 2013
Title: Visualizing GroEL/ES in the act of encapsulating a folding protein.
Authors: Dong-Hua Chen / Damian Madan / Jeremy Weaver / Zong Lin / Gunnar F Schröder / Wah Chiu / Hays S Rye /
Abstract: The GroEL/ES chaperonin system is required for the assisted folding of many proteins. How these substrate proteins are encapsulated within the GroEL-GroES cavity is poorly understood. Using symmetry- ...The GroEL/ES chaperonin system is required for the assisted folding of many proteins. How these substrate proteins are encapsulated within the GroEL-GroES cavity is poorly understood. Using symmetry-free, single-particle cryo-electron microscopy, we have characterized a chemically modified mutant of GroEL (EL43Py) that is trapped at a normally transient stage of substrate protein encapsulation. We show that the symmetric pattern of the GroEL subunits is broken as the GroEL cis-ring apical domains reorient to accommodate the simultaneous binding of GroES and an incompletely folded substrate protein (RuBisCO). The collapsed RuBisCO folding intermediate binds to the lower segment of two apical domains, as well as to the normally unstructured GroEL C-terminal tails. A comparative structural analysis suggests that the allosteric transitions leading to substrate protein release and folding involve concerted shifts of GroES and the GroEL apical domains and C-terminal tails.
History
DepositionMar 4, 2013Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jun 19, 2013Provider: repository / Type: Initial release
Revision 1.1Aug 23, 2017Group: Data collection / Refinement description / Category: em_3d_fitting / em_software
Item: _em_3d_fitting.target_criteria / _em_software.fitting_id / _em_software.image_processing_id

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Structure visualization

Movie
  • Deposited structure unit
  • Imaged by Jmol
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  • Superimposition on EM map
  • EMDB-2327
  • Imaged by UCSF Chimera
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Structure viewerMolecule:
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Assembly

Deposited unit
A: 60 KDA CHAPERONIN
B: 60 KDA CHAPERONIN
C: 60 KDA CHAPERONIN
D: 60 KDA CHAPERONIN
E: 60 KDA CHAPERONIN
F: 60 KDA CHAPERONIN
G: 60 KDA CHAPERONIN
H: 60 KDA CHAPERONIN
I: 60 KDA CHAPERONIN
J: 60 KDA CHAPERONIN
K: 60 KDA CHAPERONIN
L: 60 KDA CHAPERONIN
M: 60 KDA CHAPERONIN
N: 60 KDA CHAPERONIN
O: 10 KDA CHAPERONIN
P: 10 KDA CHAPERONIN
Q: 10 KDA CHAPERONIN
R: 10 KDA CHAPERONIN
S: 10 KDA CHAPERONIN
T: 10 KDA CHAPERONIN
U: 10 KDA CHAPERONIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)852,45535
Polymers849,29421
Non-polymers3,16114
Water0
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA

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Components

#1: Protein
60 KDA CHAPERONIN / GROEL PROTEIN / PROTEIN CPN60


Mass: 55463.387 Da / Num. of mol.: 14
Source method: isolated from a genetically manipulated source
Details: THE D398A MUTATION PREVENTS ATP HYDROLYSIS BY GROEL.
Source: (gene. exp.) ESCHERICHIA COLI BL21 (bacteria) / Production host: ESCHERICHIA COLI (E. coli) / References: UniProt: P0A6F5
#2: Protein
10 KDA CHAPERONIN / GROES PROTEIN / PROTEIN CPN10


Mass: 10400.938 Da / Num. of mol.: 7
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) ESCHERICHIA COLI K-12 (bacteria) / Production host: ESCHERICHIA COLI (E. coli) / References: UniProt: P0A6F9
#3: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: Mg
#4: Chemical
ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE / Adenosine diphosphate


Mass: 427.201 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Comment: ADP, energy-carrying molecule*YM

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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: NON-NATIVE RUBISCO SUBSTRATE PROTEIN ENCAPSULATED INSIDE THE CAVITY OF GROEL CAPPED BY GROES WITH THE ASSISTANCE OF NUCLEOTIDE ATP
Type: COMPLEX
Buffer solutionName: 50 MM HEPES, 50 MM KOAC, 10 MM MG(OAC)2, 2 MM DTT / pH: 7.6 / Details: 50 MM HEPES, 50 MM KOAC, 10 MM MG(OAC)2, 2 MM DTT
SpecimenConc.: 2.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: HOLEY CARBON
VitrificationInstrument: FEI VITROBOT MARK III / Cryogen name: ETHANE
Details: VITRIFICATION 1 -- CRYOGEN- ETHANE, HUMIDITY- 95, TEMPERATURE- 98, INSTRUMENT- FEI VITROBOT MARK III, METHOD- BLOT FOR 1 SECOND BEFORE PLUNGING,

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Electron microscopy imaging

MicroscopyModel: JEOL 3200FSC / Date: Dec 21, 2008
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: OTHER / Nominal magnification: 50000 X / Calibrated magnification: 70760 X / Nominal defocus max: 5000 nm / Nominal defocus min: 1500 nm
Specimen holderTemperature: 101 K
Image recordingElectron dose: 20 e/Å2 / Film or detector model: GENERIC GATAN
Image scansNum. digital images: 1537

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Processing

EM software
IDNameVersionCategory
1DireXmodel fitting
2EMAN13D reconstruction
CTF correctionDetails: EACH FRAME
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionMethod: FOURIER METHODS / Resolution: 15.9 Å / Num. of particles: 8189 / Nominal pixel size: 2.12 Å / Actual pixel size: 2.12 Å
Magnification calibration: THE RMSD BETWEEN ALL EQUATORIAL DOMAINS OF THE FITTED MODELS AND THE X-RAY STRUCTURE OF THE GROEL-GROES-ADP COMPLEX WAS CALCULATED AND THE OPTIMAL PIXEL SIZE WAS CHOSEN AS ...Magnification calibration: THE RMSD BETWEEN ALL EQUATORIAL DOMAINS OF THE FITTED MODELS AND THE X-RAY STRUCTURE OF THE GROEL-GROES-ADP COMPLEX WAS CALCULATED AND THE OPTIMAL PIXEL SIZE WAS CHOSEN AS THE ONE THAT LEADS TO THE SMALLEST RMSD VALUE
Details: SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2327. (DEPOSITION ID: 11456).
Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL / Target criteria: Cross-correlation coefficient / Details: METHOD--FLEXIBLE REFINEMENT PROTOCOL--X-RAY
Atomic model buildingPDB-ID: 1AON

1aon

RefinementHighest resolution: 15.9 Å
Refinement stepCycle: LAST / Highest resolution: 15.9 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms59080 0 196 0 59276

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