1O94

Ternary complex between trimethylamine dehydrogenase and electron transferring flavoprotein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 

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This is version 1.1 of the entry. See complete history


Literature

Extensive Conformational Sampling in a Ternary Electron Transfer Complex.

Leys, D.Basran, J.Talfournier, F.Sutcliffe, M.J.Scrutton, N.S.

(2003) Nat Struct Biol 10: 219

  • DOI: 10.1038/nsb894
  • Primary Citation of Related Structures:  
    1O94, 1O95, 1O96, 1O97

  • PubMed Abstract: 
  • Here we report the crystal structures of a ternary electron transfer complex showing extensive motion at the protein interface. This physiological complex comprises the iron-sulfur flavoprotein trimethylamine dehydrogenase and electron transferring flavoprotein (ETF) from Methylophilus methylotrophus ...

    Here we report the crystal structures of a ternary electron transfer complex showing extensive motion at the protein interface. This physiological complex comprises the iron-sulfur flavoprotein trimethylamine dehydrogenase and electron transferring flavoprotein (ETF) from Methylophilus methylotrophus. In addition, we report the crystal structure of free ETF. In the complex, electron density for the FAD domain of ETF is absent, indicating high mobility. Positions for the FAD domain are revealed by molecular dynamics simulation, consistent with crystal structures and kinetic data. A dual interaction of ETF with trimethylamine dehydrogenase provides for dynamical motion at the protein interface: one site acts as an anchor, thereby allowing the other site to sample a large range of interactions, some compatible with rapid electron transfer. This study establishes the role of conformational sampling in multi-domain redox systems, providing insight into electron transfer between ETFs and structurally distinct redox partners.


    Organizational Affiliation

    Department of Biochemistry, University of Leicester, University Road, Leicester LE1 7RH, UK. dl37@le.ac.uk



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TRIMETHYLAMINE DEHYDROGENASEA, B729Methylophilus methylotrophusMutation(s): 0 
Gene Names: tmd
EC: 1.5.99.7 (PDB Primary Data), 1.5.8.2 (UniProt)
UniProt
Find proteins for P16099 (Methylophilus methylotrophus)
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Go to UniProtKB:  P16099
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ELECTRON TRANSFER FLAVOPROTEIN BETA-SUBUNITC, E264Methylophilus methylotrophusMutation(s): 0 
Gene Names: etfB
UniProt
Find proteins for P53570 (Methylophilus methylotrophus)
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Go to UniProtKB:  P53570
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
ELECTRON TRANSFER FLAVOPROTEIN ALPHA-SUBUNITD, F320Methylophilus methylotrophusMutation(s): 0 
Gene Names: etfA
UniProt
Find proteins for P53571 (Methylophilus methylotrophus)
Explore P53571 
Go to UniProtKB:  P53571
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 118.93α = 90
b = 211.543β = 100.03
c = 125.97γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-02-06
    Type: Initial release
  • Version 1.1: 2013-09-18
    Changes: Derived calculations, Non-polymer description, Other, Version format compliance