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
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP16099
Protein Feature View
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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
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UniProt GroupP53570
Protein Feature View
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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
Entity Groups  
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UniProt GroupP53571
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN
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G [auth A],
J [auth B]		FLAVIN MONONUCLEOTIDE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N		 Ligand Interaction
ADP
Query on ADP
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H [auth A],
K [auth B]		ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N		 Ligand Interaction
SF4
Query on SF4
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I [auth A],
L [auth B]		IRON/SULFUR CLUSTER
Fe4 S4
LJBDFODJNLIPKO-VKOJMFJBAC		 Ligand Interaction
AMP
Query on AMP
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M [auth C],
N [auth E]		ADENOSINE MONOPHOSPHATE
C10 H14 N5 O7 P
UDMBCSSLTHHNCD-KQYNXXCUSA-N		 Ligand Interaction
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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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