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Open data
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Basic information
| Entry | Database: PDB / ID: 6mrc | ||||||||||||||||||||||||||||||||||||||||||
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| Title | ADP-bound human mitochondrial Hsp60-Hsp10 football complex | ||||||||||||||||||||||||||||||||||||||||||
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Keywords | CHAPERONE / Complex / ADP / Football | ||||||||||||||||||||||||||||||||||||||||||
| Function / homology | Function and homology informationcoated 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 / chaperonin ATPase / Mitochondrial protein import / positive regulation of macrophage activation / negative regulation of execution phase of apoptosis / cellular response to interleukin-7 / MyD88-dependent toll-like receptor signaling pathway / biological process involved in interaction with symbiont / 'de novo' protein folding / sperm plasma membrane / apoptotic mitochondrial changes / B cell activation / : / B cell proliferation / positive regulation of interferon-alpha production / positive regulation of interleukin-10 production / DNA replication origin binding / apolipoprotein binding / RHOG GTPase cycle / positive regulation of execution phase of apoptosis / response to unfolded protein / Mitochondrial unfolded protein response (UPRmt) / isomerase activity / chaperone-mediated protein complex assembly / sperm midpiece / clathrin-coated pit / positive regulation of interleukin-12 production / protein folding chaperone / Mitochondrial protein degradation / intrinsic apoptotic signaling pathway / response to cold / secretory granule / T cell activation / protein maturation / ATP-dependent protein folding chaperone / lipopolysaccharide binding / positive regulation of T cell activation / positive regulation of interleukin-6 production / positive regulation of type II interferon production / osteoblast differentiation / p53 binding / unfolded protein binding / protein folding / single-stranded DNA binding / double-stranded RNA 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 / metal ion binding / membrane / plasma membrane / cytoplasm / cytosol Similarity search - Function | ||||||||||||||||||||||||||||||||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||||||||||||||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.08 Å | ||||||||||||||||||||||||||||||||||||||||||
Authors | Gomez-Llorente, Y. / Jebara, F. / Patra, M. / Malik, R. / Nissemblat, S. / Azem, A. / Hirsch, J.A. / Ubarretxena-Belandia, I. | ||||||||||||||||||||||||||||||||||||||||||
| Funding support | United States, 1items
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Citation | Journal: Nat Commun / Year: 2020Title: 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. | ||||||||||||||||||||||||||||||||||||||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 6mrc.cif.gz | 1.4 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb6mrc.ent.gz | 1.2 MB | Display | PDB format |
| PDBx/mmJSON format | 6mrc.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 6mrc_validation.pdf.gz | 1.9 MB | Display | wwPDB validaton report |
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| Full document | 6mrc_full_validation.pdf.gz | 2.2 MB | Display | |
| Data in XML | 6mrc_validation.xml.gz | 252.1 KB | Display | |
| Data in CIF | 6mrc_validation.cif.gz | 370.1 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/mr/6mrc ftp://data.pdbj.org/pub/pdb/validation_reports/mr/6mrc | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9195MC ![]() 9196C ![]() 6mrdC M: map data used to model this data C: citing same article ( |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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Components
| #1: 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: ![]() #2: Protein | 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: ![]() #3: Chemical | ChemComp-ADP / #4: Chemical | ChemComp-MG / #5: Water | ChemComp-HOH / | Has protein modification | N | |
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-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: Complex of Hsp60 with Hsp10 bound to ADP and Mg / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT |
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| Molecular weight | Value: 0.98 MDa / Experimental value: NO |
| Source (natural) | Organism: Homo sapiens (human) |
| Source (recombinant) | Organism: ![]() |
| Buffer solution | pH: 7.7 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Specimen support | Grid material: GOLD / Grid type: Homemade |
| Vitrification | Instrument: HOMEMADE PLUNGER / Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Alignment procedure: COMA FREE |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Average 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
| Software | Name: PHENIX / Version: 1.13_2998: / Classification: refinement | ||||||||||||||||||||||||
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| EM software |
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.08 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 66013 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi




Homo sapiens (human)
United States, 1items
Citation

UCSF Chimera








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