3EWK

Structure of the redox sensor domain of Methylococcus capsulatus (Bath) MmoS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.238 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the Redox Sensor Domain of Methylococcus capsulatus (Bath) MmoS.

Ukaegbu, U.E.Rosenzweig, A.C.

(2009) Biochemistry 48: 2207-2215

  • DOI: 10.1021/bi8019614

  • PubMed Abstract: 
  • MmoS from Methylococcus capsulatus (Bath) is the multidomain sensor protein of a two-component signaling system proposed to play a role in the copper-mediated regulation of soluble methane monooxygenase (sMMO). MmoS binds an FAD cofactor within its N ...

    MmoS from Methylococcus capsulatus (Bath) is the multidomain sensor protein of a two-component signaling system proposed to play a role in the copper-mediated regulation of soluble methane monooxygenase (sMMO). MmoS binds an FAD cofactor within its N-terminal tandem Per-Arnt-Sim (PAS) domains, suggesting that it functions as a redox sensor. The crystal structure of the MmoS tandem PAS domains, designated PAS-A and PAS-B, has been determined to 2.34 A resolution. Both domains adopt the typical PAS domain alpha/beta topology and are structurally similar. The two domains are linked by a long alpha helix and do not interact with one another. The FAD cofactor is housed solely within PAS-A and is stabilized by an extended hydrogen bonding network. The overall fold of PAS-A is similar to those of other flavin-containing PAS domains, but homodimeric interactions in other structures are not observed in the MmoS sensor, which crystallized as a monomer. The structure both provides new insight into the architecture of tandem PAS domains and suggests specific residues that may play a role in MmoS FAD redox chemistry and subsequent signal transduction.


    Organizational Affiliation

    Department of Biochemistry, Northwestern University, Evanston, Illinois 60208, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sensor protein
A
227Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath)Mutation(s): 0 
Find proteins for Q609M8 (Methylococcus capsulatus (strain ATCC 33009 / NCIMB 11132 / Bath))
Go to UniProtKB:  Q609M8
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
FAD
Query on FAD

Download SDF File 
Download CCD File 
A
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.238 
  • Space Group: P 4 21 2
Unit Cell:
Length (Å)Angle (°)
a = 146.710α = 90.00
b = 146.710β = 90.00
c = 43.600γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
HKL-2000data scaling
HKL-2000data collection
SCALEPACKdata scaling
SHARPphasing
PDB_EXTRACTdata extraction
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-03-24
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.2: 2017-10-25
    Type: Refinement description