6FAH

Molecular basis of the flavin-based electron-bifurcating caffeyl-CoA reductase reaction


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.133 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.234 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Molecular basis of the flavin-based electron-bifurcating caffeyl-CoA reductase reaction.

Demmer, J.K.Bertsch, J.Oppinger, C.Wohlers, H.Kayastha, K.Demmer, U.Ermler, U.Muller, V.

(2018) FEBS Lett. 592: 332-342

  • DOI: 10.1002/1873-3468.12971

  • PubMed Abstract: 
  • Flavin-based electron bifurcation (FBEB) is a recently discovered mode of energy coupling in anaerobic microorganisms. The electron-bifurcating caffeyl-CoA reductase (CarCDE) catalyzes the reduction of caffeyl-CoA and ferredoxin by oxidizing NADH. Th ...

    Flavin-based electron bifurcation (FBEB) is a recently discovered mode of energy coupling in anaerobic microorganisms. The electron-bifurcating caffeyl-CoA reductase (CarCDE) catalyzes the reduction of caffeyl-CoA and ferredoxin by oxidizing NADH. The 3.5 Å structure of the heterododecameric Car(CDE)4 complex of Acetobacterium woodii, presented here, reveals compared to other electron transferring flavoprotein/ acyl dehydrogenase family members an additional ferredoxin-like domain with two [4Fe-4S] clusters N-terminally fused to CarE. It might serve, in vivo, as specific adaptor for the physiological electron acceptor. Kinetic analysis of a CarCDE(∆Fd) complex indicates the bypassing of the ferredoxin domain by artificial electron acceptors. Site-directed mutagenesis studies substantiated the crucial role of the C-terminal arm of CarD and of ArgE203 hydrogen-bonded to the bifurcating FAD for FBEB. This article is protected by copyright. All rights reserved.


    Organizational Affiliation

    Max-Planck-Institut für Biophysik, Max-von-Laue-Str. 3, 60438, Frankfurt am Main, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Caffeyl-CoA reductase-Etf complex subunit CarE
A, E
396Acetobacterium woodii (strain ATCC 29683 / DSM 1030 / JCM 2381 / KCTC 1655 / WB1)Mutation(s): 0 
Gene Names: carE
EC: 1.3.1.108
Find proteins for H6LGM8 (Acetobacterium woodii (strain ATCC 29683 / DSM 1030 / JCM 2381 / KCTC 1655 / WB1))
Go to UniProtKB:  H6LGM8
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Caffeyl-CoA reductase-Etf complex subunit CarD
B, F
262Acetobacterium woodii (strain ATCC 29683 / DSM 1030 / JCM 2381 / KCTC 1655 / WB1)Mutation(s): 0 
Gene Names: carD
EC: 1.3.1.108
Find proteins for H6LGM7 (Acetobacterium woodii (strain ATCC 29683 / DSM 1030 / JCM 2381 / KCTC 1655 / WB1))
Go to UniProtKB:  H6LGM7
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Caffeyl-CoA reductase-Etf complex subunit CarC
C, D
379Acetobacterium woodii (strain ATCC 29683 / DSM 1030 / JCM 2381 / KCTC 1655 / WB1)Mutation(s): 0 
Gene Names: carC
EC: 1.3.1.108
Find proteins for H6LGM6 (Acetobacterium woodii (strain ATCC 29683 / DSM 1030 / JCM 2381 / KCTC 1655 / WB1))
Go to UniProtKB:  H6LGM6
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SF4
Query on SF4

Download SDF File 
Download CCD File 
A, E
IRON/SULFUR CLUSTER
Fe4 S4
LJBDFODJNLIPKO-VKOJMFJBAC
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
FAD
Query on FAD

Download SDF File 
Download CCD File 
A, B, C, D, E, F
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.133 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.234 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 213.740α = 90.00
b = 144.260β = 98.93
c = 102.840γ = 90.00
Software Package:
Software NamePurpose
Cootmodel building
XDSdata reduction
PHASERphasing
PHENIXrefinement
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research FoundationGermany--

Revision History 

  • Version 1.0: 2018-01-24
    Type: Initial release
  • Version 1.1: 2018-02-21
    Type: Database references