3O55

Crystal structure of human FAD-linked augmenter of liver regeneration (ALR)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.182 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

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: 4811-4816

  • DOI: 10.1073/pnas.1014542108
  • Also Cited By: 3U2M, 3U2L

  • PubMed Abstract: 
  • Oxidative protein folding in the mitochondrial intermembrane space requires the transfer of a disulfide bond from MIA40 to the substrate. During this process MIA40 is reduced and regenerated to a functional state through the interaction with the flav ...

    Oxidative protein folding in the mitochondrial intermembrane space requires the transfer of a disulfide bond from MIA40 to the substrate. During this process MIA40 is reduced and regenerated to a functional state through the interaction with the flavin-dependent sulfhydryl oxidase ALR. Here we present the mechanistic basis of ALR-MIA40 interaction at atomic resolution by biochemical and structural analyses of the mitochondrial ALR isoform and its covalent mixed disulfide intermediate with MIA40. This ALR isoform contains a folded FAD-binding domain at the C-terminus and an unstructured, flexible N-terminal domain, weakly and transiently interacting one with the other. A specific region of the N-terminal domain guides the interaction with the MIA40 substrate binding cleft (mimicking the interaction of the substrate itself), without being involved in the import of ALR. The hydrophobicity-driven binding of this region ensures precise protein-protein recognition needed for an efficient electron transfer process.


    Organizational Affiliation

    Magnetic Resonance Center (CERM), University of Florence, Via Luigi Sacconi 6, Sesto Fiorentino, 50019 Florence, Italy. banci@cerm.unifi.it




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Augmenter of liver regeneration
A
125Homo sapiensMutation(s): 2 
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: 1.9 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.182 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 50.849α = 90.00
b = 76.566β = 90.00
c = 62.310γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
CrysalisProdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-04-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-08
    Type: Refinement description