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Yorodumi- PDB-7s4k: CryoEM structure of Methylococcus capsulatus (Bath) pMMO in a nat... -
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Basic information
| Entry | Database: PDB / ID: 7s4k | ||||||
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| Title | CryoEM structure of Methylococcus capsulatus (Bath) pMMO in a native lipid nanodisc at 2.34 Angstrom resolution | ||||||
Components |
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Keywords | OXIDOREDUCTASE / Complex | ||||||
| Function / homology | Function and homology informationmethane monooxygenase (particulate) / methane monooxygenase (soluble) / methane monooxygenase [NAD(P)H] activity / monooxygenase activity / metal ion binding / membrane Similarity search - Function | ||||||
| Biological species | Methylococcus capsulatus str. Bath (bacteria) | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.36 Å | ||||||
Authors | Koo, C.W. / Rosenzweig, A.C. | ||||||
| Funding support | United States, 1items
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Citation | Journal: Science / Year: 2022Title: Recovery of particulate methane monooxygenase structure and activity in a lipid bilayer. Authors: Christopher W Koo / Frank J Tucci / Yuan He / Amy C Rosenzweig / ![]() Abstract: Bacterial methane oxidation using the enzyme particulate methane monooxygenase (pMMO) contributes to the removal of environmental methane, a potent greenhouse gas. Crystal structures determined using ...Bacterial methane oxidation using the enzyme particulate methane monooxygenase (pMMO) contributes to the removal of environmental methane, a potent greenhouse gas. Crystal structures determined using inactive, detergent-solubilized pMMO lack several conserved regions neighboring the proposed active site. We show that reconstituting pMMO in nanodiscs with lipids extracted from the native organism restores methane oxidation activity. Multiple nanodisc-embedded pMMO structures determined by cryo-electron microscopy to 2.14- to 2.46-angstrom resolution reveal the structure of pMMO in a lipid environment. The resulting model includes stabilizing lipids, regions of the PmoA and PmoC subunits not observed in prior structures, and a previously undetected copper-binding site in the PmoC subunit with an adjacent hydrophobic cavity. These structures provide a revised framework for understanding and engineering pMMO function. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 7s4k.cif.gz | 697.7 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb7s4k.ent.gz | 562.9 KB | Display | PDB format |
| PDBx/mmJSON format | 7s4k.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 7s4k_validation.pdf.gz | 2.7 MB | Display | wwPDB validaton report |
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| Full document | 7s4k_full_validation.pdf.gz | 2.9 MB | Display | |
| Data in XML | 7s4k_validation.xml.gz | 98.6 KB | Display | |
| Data in CIF | 7s4k_validation.cif.gz | 130.4 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/s4/7s4k ftp://data.pdbj.org/pub/pdb/validation_reports/s4/7s4k | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 24829MC ![]() 7s4hC ![]() 7s4iC ![]() 7s4jC ![]() 7s4lC ![]() 7s4mC ![]() 7t4oC ![]() 7t4pC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-Particulate methane monooxygenase ... , 2 types, 6 molecules AEIBFJ
| #1: Protein | Mass: 46129.746 Da / Num. of mol.: 3 / Source method: isolated from a natural source Source: (natural) Methylococcus capsulatus str. Bath (bacteria)Strain: ATCC 33009 / NCIMB 11132 / Bath References: UniProt: G1UBD1, methane monooxygenase (particulate) #3: Protein | Mass: 28445.098 Da / Num. of mol.: 3 / Source method: isolated from a natural source Source: (natural) Methylococcus capsulatus str. Bath (bacteria)Strain: ATCC 33009 / NCIMB 11132 / Bath References: UniProt: Q607G3, methane monooxygenase (particulate) |
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-Protein , 1 types, 3 molecules CGK
| #2: Protein | Mass: 29839.309 Da / Num. of mol.: 3 / Source method: isolated from a natural source Source: (natural) Methylococcus capsulatus str. Bath (bacteria)Strain: ATCC 33009 / NCIMB 11132 / Bath References: UniProt: Q603F1, methane monooxygenase (soluble) |
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-Non-polymers , 6 types, 173 molecules 










| #4: Chemical | ChemComp-CU / #5: Chemical | ChemComp-D10 / #6: Chemical | ChemComp-PLC / #7: Chemical | ChemComp-HXG / #8: Chemical | ChemComp-P1O / #9: Water | ChemComp-HOH / | |
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-Details
| Has ligand of interest | Y |
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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: pMMO complex in a native lipid nanodisc / Type: COMPLEX / Entity ID: #1-#3 / Source: NATURAL |
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| Molecular weight | Experimental value: NO |
| Source (natural) | Organism: Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath) (bacteria) |
| Buffer solution | pH: 7.3 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | 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 |
| Image recording | Electron dose: 52 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 3D reconstruction | Resolution: 2.36 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 546332 / Symmetry type: POINT |
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Methylococcus capsulatus str. Bath (bacteria)
United States, 1items
Citation














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FIELD EMISSION GUN