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- PDB-6mrc: ADP-bound human mitochondrial Hsp60-Hsp10 football complex -

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Basic information

Entry
Database: PDB / ID: 6mrc
TitleADP-bound human mitochondrial Hsp60-Hsp10 football complex
Components
  • 10 kDa heat shock protein, mitochondrial
  • 60 kDa heat shock protein, mitochondrial
KeywordsCHAPERONE / Complex / ADP / Football
Function / homology
Function and homology information


coated vesicle / isotype switching to IgG isotypes / mitochondrial unfolded protein response / TFAP2A acts as a transcriptional repressor during retinoic acid induced cell differentiation / apolipoprotein A-I binding / lipopolysaccharide receptor complex / protein import into mitochondrial intermembrane space / high-density lipoprotein particle binding / migrasome / cysteine-type endopeptidase activator activity ...coated vesicle / isotype switching to IgG isotypes / mitochondrial unfolded protein response / TFAP2A acts as a transcriptional repressor during retinoic acid induced cell differentiation / apolipoprotein A-I binding / lipopolysaccharide receptor complex / protein import into mitochondrial intermembrane space / high-density lipoprotein particle binding / migrasome / cysteine-type endopeptidase activator activity / positive regulation of T cell mediated immune response to tumor cell / Mitochondrial protein import / chaperonin ATPase / positive regulation of macrophage activation / negative regulation of execution phase of apoptosis / cellular response to interleukin-7 / biological process involved in interaction with symbiont / MyD88-dependent toll-like receptor signaling pathway / 'de novo' protein folding / apoptotic mitochondrial changes / sperm plasma membrane / B cell activation / positive regulation of interferon-alpha production / B cell proliferation / positive regulation of interleukin-10 production / positive regulation of execution phase of apoptosis / : / apolipoprotein binding / DNA replication origin binding / RHOG GTPase cycle / response to unfolded protein / Mitochondrial unfolded protein response (UPRmt) / chaperone-mediated protein complex assembly / protein maturation / clathrin-coated pit / sperm midpiece / Mitochondrial protein degradation / positive regulation of interleukin-12 production / protein folding chaperone / intrinsic apoptotic signaling pathway / response to cold / secretory granule / T cell activation / isomerase activity / lipopolysaccharide binding / ATP-dependent protein folding chaperone / positive regulation of interleukin-6 production / positive regulation of T cell activation / positive regulation of type II interferon production / osteoblast differentiation / p53 binding / unfolded protein binding / protein folding / double-stranded RNA binding / single-stranded DNA binding / protein-folding chaperone binding / protein refolding / early endosome / mitochondrial inner membrane / protein stabilization / mitochondrial matrix / ubiquitin protein ligase binding / negative regulation of apoptotic process / enzyme binding / cell surface / protein-containing complex / ATP hydrolysis activity / mitochondrion / extracellular space / RNA binding / extracellular exosome / ATP binding / membrane / metal ion binding / plasma membrane / cytosol / cytoplasm
Similarity search - Function
10 Kd Chaperonin, Protein Cpn10; Chain O / GroES chaperonin / GROEL; domain 1 / GroEL-like equatorial domain / GROEL; domain 2 / TCP-1-like chaperonin intermediate domain / Chaperonin GroES, conserved site / Chaperonins cpn10 signature. / Chaperonin 10 Kd subunit / GroES chaperonin family ...10 Kd Chaperonin, Protein Cpn10; Chain O / GroES chaperonin / GROEL; domain 1 / GroEL-like equatorial domain / GROEL; domain 2 / TCP-1-like chaperonin intermediate domain / 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 / Roll / 2-Layer Sandwich / Orthogonal Bundle / Mainly Beta / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / 60 kDa heat shock protein, mitochondrial / 10 kDa heat shock protein, mitochondrial
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.08 Å
AuthorsGomez-Llorente, Y. / Jebara, F. / Patra, M. / Malik, R. / Nissemblat, S. / Azem, A. / Hirsch, J.A. / Ubarretxena-Belandia, I.
Funding support United States, 1items
OrganizationGrant numberCountry
United States - Israel Binational Science Foundation (BSF) United States
CitationJournal: Nat Commun / Year: 2020
Title: Structural basis for active single and double ring complexes in human mitochondrial Hsp60-Hsp10 chaperonin.
Authors: Yacob Gomez-Llorente / Fady Jebara / Malay Patra / Radhika Malik / Shahar Nisemblat / Orna Chomsky-Hecht / Avital Parnas / Abdussalam Azem / Joel A Hirsch / Iban Ubarretxena-Belandia /
Abstract: mHsp60-mHsp10 assists the folding of mitochondrial matrix proteins without the negative ATP binding inter-ring cooperativity of GroEL-GroES. Here we report the crystal structure of an ATP (ADP:BeF- ...mHsp60-mHsp10 assists the folding of mitochondrial matrix proteins without the negative ATP binding inter-ring cooperativity of GroEL-GroES. Here we report the crystal structure of an ATP (ADP:BeF-bound) ground-state mimic double-ring mHsp60-(mHsp10) football complex, and the cryo-EM structures of the ADP-bound successor mHsp60-(mHsp10) complex, and a single-ring mHsp60-mHsp10 half-football. The structures explain the nucleotide dependence of mHsp60 ring formation, and reveal an inter-ring nucleotide symmetry consistent with the absence of negative cooperativity. In the ground-state a two-fold symmetric H-bond and a salt bridge stitch the double-rings together, whereas only the H-bond remains as the equatorial gap increases in an ADP football poised to split into half-footballs. Refolding assays demonstrate obligate single- and double-ring mHsp60 variants are active, and complementation analysis in bacteria shows the single-ring variant is as efficient as wild-type mHsp60. Our work provides a structural basis for active single- and double-ring complexes coexisting in the mHsp60-mHsp10 chaperonin reaction cycle.
History
DepositionOct 12, 2018Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 15, 2020Provider: repository / Type: Initial release
Revision 1.1May 6, 2020Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Jul 8, 2020Group: Structure summary / Category: audit_author
Revision 1.3Mar 13, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_struct_conn_angle / struct_conn
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id

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Structure visualization

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Assembly

Deposited unit
H: 60 kDa heat shock protein, mitochondrial
V: 10 kDa heat shock protein, mitochondrial
2: 10 kDa heat shock protein, mitochondrial
1: 10 kDa heat shock protein, mitochondrial
Z: 10 kDa heat shock protein, mitochondrial
Y: 10 kDa heat shock protein, mitochondrial
X: 10 kDa heat shock protein, mitochondrial
W: 10 kDa heat shock protein, mitochondrial
R: 10 kDa heat shock protein, mitochondrial
Q: 10 kDa heat shock protein, mitochondrial
P: 10 kDa heat shock protein, mitochondrial
O: 10 kDa heat shock protein, mitochondrial
U: 10 kDa heat shock protein, mitochondrial
T: 10 kDa heat shock protein, mitochondrial
S: 10 kDa heat shock protein, mitochondrial
N: 60 kDa heat shock protein, mitochondrial
M: 60 kDa heat shock protein, mitochondrial
L: 60 kDa heat shock protein, mitochondrial
K: 60 kDa heat shock protein, mitochondrial
J: 60 kDa heat shock protein, mitochondrial
I: 60 kDa heat shock protein, mitochondrial
D: 60 kDa heat shock protein, mitochondrial
C: 60 kDa heat shock protein, mitochondrial
B: 60 kDa heat shock protein, mitochondrial
A: 60 kDa heat shock protein, mitochondrial
G: 60 kDa heat shock protein, mitochondrial
F: 60 kDa heat shock protein, mitochondrial
E: 60 kDa heat shock protein, mitochondrial
hetero molecules


Theoretical massNumber of molelcules
Total (without water)944,43356
Polymers938,11128
Non-polymers6,32128
Water1,76598
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area97650 Å2
ΔGint-691 kcal/mol
Surface area357680 Å2

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Components

#1: Protein
60 kDa heat shock protein, mitochondrial / 60 kDa chaperonin / Chaperonin 60 / CPN60 / Heat shock protein 60 / Hsp60 / HuCHA60 / Mitochondrial ...60 kDa chaperonin / Chaperonin 60 / CPN60 / Heat shock protein 60 / Hsp60 / HuCHA60 / Mitochondrial matrix protein P1 / P60 lymphocyte protein


Mass: 56263.559 Da / Num. of mol.: 14 / Fragment: UNP residues 27-552
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: HSPD1, HSP60 / Production host: Escherichia coli (E. coli) / References: UniProt: P10809, EC: 3.6.4.9
#2: Protein
10 kDa heat shock protein, mitochondrial / Hsp10 / 10 kDa chaperonin / Chaperonin 10 / CPN10 / Early-pregnancy factor / EPF


Mass: 10744.400 Da / Num. of mol.: 14
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: HSPE1 / Production host: Escherichia coli (E. coli) / References: UniProt: P61604
#3: Chemical
ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 14 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Comment: ADP, energy-carrying molecule*YM
#4: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 14 / Source method: obtained synthetically / Formula: Mg
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 98 / Source method: isolated from a natural source / Formula: H2O

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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: Complex of Hsp60 with Hsp10 bound to ADP and Mg / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Molecular weightValue: 0.98 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.7
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid type: Homemade
VitrificationInstrument: HOMEMADE PLUNGER / Cryogen 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 / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 10 sec. / Electron dose: 63 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.13_2998: / Classification: refinement
EM software
IDNameCategory
2Leginonimage acquisition
4CTFFINDCTF correction
10RELIONinitial Euler assignment
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.08 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 66013 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00469650
ELECTRON MICROSCOPYf_angle_d0.8796796
ELECTRON MICROSCOPYf_dihedral_angle_d6.83741608
ELECTRON MICROSCOPYf_chiral_restr0.06810850
ELECTRON MICROSCOPYf_plane_restr0.00411774

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