1FZH

METHANE MONOOXYGENASE HYDROXYLASE, FORM II PRESSURIZED WITH XENON GAS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.206 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Xenon and halogenated alkanes track putative substrate binding cavities in the soluble methane monooxygenase hydroxylase.

Whittington, D.A.Rosenzweig, A.C.Frederick, C.A.Lippard, S.J.

(2001) Biochemistry 40: 3476-3482

  • DOI: https://doi.org/10.1021/bi0022487
  • Primary Citation of Related Structures:  
    1FZ8, 1FZ9, 1FZH, 1FZI

  • PubMed Abstract: 

    To investigate the role of protein cavities in facilitating movement of the substrates, methane and dioxygen, in the soluble methane monooxygenase hydroxylase (MMOH), we determined the X-ray structures of MMOH from Methylococcus capsulatus (Bath) cocrystallized with dibromomethane or iodoethane, or by using crystals pressurized with xenon gas. The halogenated alkanes bind in two cavities within the alpha-subunit that extend from one surface of the protein to the buried dinuclear iron active site. Two additional binding sites were located in the beta-subunit. Pressurization of two crystal forms of MMOH with xenon resulted in the identification of six binding sites located exclusively in the alpha-subunit. These results indicate that hydrophobic species bind preferentially in preexisting cavities in MMOH and support the hypothesis that such cavities may play a functional role in sequestering and enhancing the availability of the physiological substrates for reaction at the active site.


  • Organizational Affiliation

    Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
METHANE MONOOXYGENASE COMPONENT A, ALPHA CHAIN
A, B
527Methylococcus capsulatusMutation(s): 0 
EC: 1.14.13.25
UniProt
Find proteins for P22869 (Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath))
Explore P22869 
Go to UniProtKB:  P22869
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP22869
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
METHANE MONOOXYGENASE COMPONENT A, BETA CHAIN
C, D
389Methylococcus capsulatusMutation(s): 0 
EC: 1.14.13.25
UniProt
Find proteins for P18798 (Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath))
Explore P18798 
Go to UniProtKB:  P18798
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP18798
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
METHANE MONOOXYGENASE COMPONENT A, GAMMA CHAIN
E, F
170Methylococcus capsulatusMutation(s): 0 
EC: 1.14.13.25
UniProt
Find proteins for P11987 (Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath))
Explore P11987 
Go to UniProtKB:  P11987
Entity Groups  
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UniProt GroupP11987
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
XE
Query on XE

Download Ideal Coordinates CCD File 
J [auth A]
K [auth A]
L [auth A]
M [auth A]
N [auth A]
J [auth A],
K [auth A],
L [auth A],
M [auth A],
N [auth A],
O [auth A],
S [auth B],
T [auth B],
U [auth B],
V [auth B],
W [auth B]
XENON
Xe
FHNFHKCVQCLJFQ-UHFFFAOYSA-N
FE
Query on FE

Download Ideal Coordinates CCD File 
G [auth A],
H [auth A],
P [auth B],
Q [auth B]
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
CA
Query on CA

Download Ideal Coordinates CCD File 
I [auth A],
R [auth B],
X [auth C],
Y [auth C]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.206 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.27α = 90
b = 174.62β = 90
c = 223γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-04-27
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references, Derived calculations