3U2L

Crystal structure of human ALR mutant C142S.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

An electron-transfer path through an extended disulfide relay system: the case of the redox protein ALR.

Banci, L.Bertini, I.Calderone, V.Cefaro, C.Ciofi-Baffoni, S.Gallo, A.Tokatlidis, K.

(2012) J.Am.Chem.Soc. 134: 1442-1445

  • DOI: 10.1021/ja209881f
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The oxidative folding mechanism in the intermembrane space of human mitochondria underpins a disulfide relay system consisting of the import receptor Mia40 and the homodimeric FAD-dependent thiol oxidase ALR. The flavoprotein ALR receives two electro ...

    The oxidative folding mechanism in the intermembrane space of human mitochondria underpins a disulfide relay system consisting of the import receptor Mia40 and the homodimeric FAD-dependent thiol oxidase ALR. The flavoprotein ALR receives two electrons per subunit from Mia40, which are then donated through one-electron reactions to two cytochrome c molecules, thus mediating a switch from two-electron to one-electron transfer. We dissect here the mechanism of the electron flux within ALR, characterizing at the atomic level the ALR intermediates that allow electrons to rapidly flow to cytochrome c. The intermediate critical for the electron-transfer process implies the formation of a specific inter-subunit disulfide which exclusively allows electron flow from Mia40 to FAD. This finding allows us to present a complete model for the electron-transfer pathway in ALR.


    Related Citations: 
    • Molecular recognition and substrate mimicry drive the electron-transfer process between MIA40 and ALR.
      Banci, L.,Bertini, I.,Calderone, V.,Cefaro, C.,Ciofi-Baffoni, S.,Gallo, A.,Kallergi, E.,Lionaki, E.,Pozidis, C.,Tokatlidis, K.
      (2011) Proc.Natl.Acad.Sci.USA 108: 4811


    Organizational Affiliation

    Magnetic Resonance Center, University of Florence, via L. Sacconi 6, Sesto Fiorentino, Italy. banci@cerm.unifi.it




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FAD-linked sulfhydryl oxidase ALR
A
115Homo sapiensMutation(s): 3 
Gene Names: GFER (ALR, HERV1, HPO)
EC: 1.8.3.2
Find proteins for P55789 (Homo sapiens)
Go to Gene View: GFER
Go to UniProtKB:  P55789
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download SDF File 
Download CCD File 
A
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.189 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 50.894α = 90.00
b = 76.641β = 90.00
c = 62.560γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
CrysalisProdata collection
REFMACrefinement
MOSFLMdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-06-06
    Type: Initial release
  • Version 1.1: 2017-11-08
    Type: Refinement description