1YEW

Crystal structure of particulate methane monooxygenase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.272 
  • R-Value Observed: 0.273 

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This is version 1.3 of the entry. See complete history


Literature

Crystal structure of a membrane-bound metalloenzyme that catalyses the biological oxidation of methane.

Lieberman, R.L.Rosenzweig, A.C.

(2005) Nature 434: 177-182

  • DOI: 10.1038/nature03311
  • Primary Citation of Related Structures:  
    1YEW

  • PubMed Abstract: 
  • Particulate methane monooxygenase (pMMO) is an integral membrane metalloenzyme that catalyses the conversion of methane to methanol. Knowledge of how pMMO performs this extremely challenging chemistry may have an impact on the use of methane as an alternative energy source by facilitating the development of new synthetic catalysts ...

    Particulate methane monooxygenase (pMMO) is an integral membrane metalloenzyme that catalyses the conversion of methane to methanol. Knowledge of how pMMO performs this extremely challenging chemistry may have an impact on the use of methane as an alternative energy source by facilitating the development of new synthetic catalysts. We have determined the structure of pMMO from the methanotroph Methylococcus capsulatus (Bath) to a resolution of 2.8 A. The enzyme is a trimer with an alpha3beta3gamma3 polypeptide arrangement. Two metal centres, modelled as mononuclear copper and dinuclear copper, are located in soluble regions of each pmoB subunit, which resembles cytochrome c oxidase subunit II. A third metal centre, occupied by zinc in the crystal, is located within the membrane. The structure provides new insight into the molecular details of biological methane oxidation.


    Organizational Affiliation

    Department of Biochemistry, Molecular Biology, and Cell Biology, Northwestern University, Evanston, Illinois 60208, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
particulate methane monooxygenase, B subunitA, D [auth E], G [auth I]382Methylococcus capsulatus str. BathMutation(s): 0 
Gene Names: pmoB1pmoBMCA1796pmoB2MCA2853
EC: 1.14.18.3
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Oxygenases
Protein: 
Particulate methane monooxgenase (pMMO)
Find proteins for G1UBD1 (Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath))
Explore G1UBD1 
Go to UniProtKB:  G1UBD1
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
particulate methane monooxygenase, A subunitB, E [auth F], H [auth J]247Methylococcus capsulatus str. BathMutation(s): 0 
Gene Names: pmoA1pmoAMCA1797pmoA2MCA2854
EC: 1.14.18.3
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Oxygenases
Protein: 
Particulate methane monooxgenase (pMMO)
Find proteins for Q607G3 (Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath))
Explore Q607G3 
Go to UniProtKB:  Q607G3
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
particulate methane monooxygenase subunit C2C, F [auth G], I [auth K]289Methylococcus capsulatusMutation(s): 0 
Gene Names: pmoC2
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Oxygenases
Protein: 
Particulate methane monooxgenase (pMMO)
Find proteins for O05111 (Methylococcus capsulatus)
Explore O05111 
Go to UniProtKB:  O05111
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.272 
  • R-Value Observed: 0.273 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 264.14α = 90
b = 264.14β = 90
c = 150.005γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MAR345data collection
XDSdata scaling
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-02-08
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Source and taxonomy, Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description