5FS6

Crystal structure of the V243L mutant of human apoptosis inducing factor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure/Function Relations in Aifm1 Variants Associated with Neurodegenerative Disorders

Sevrioukova, I.

(2016) J.Mol.Biol. 428: 3650

  • DOI: 10.1016/j.jmb.2016.05.004
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The X-linked AIFM1 gene encodes mitochondrial apoptosis-inducing factor (AIF), an FAD-containing and NADH-specific oxidoreductase critically important for energy metabolism and execution of the caspase-independent cell death pathway. Several recently ...

    The X-linked AIFM1 gene encodes mitochondrial apoptosis-inducing factor (AIF), an FAD-containing and NADH-specific oxidoreductase critically important for energy metabolism and execution of the caspase-independent cell death pathway. Several recently identified mutations in human AIFM1 lead to neurodegenerative disorders varying in severity and onset time. This study was undertaken to structurally and functionally characterize four pathologic variants of human AIF: V243L, G262S, G308E, and G338E. A strong correlation between the mutational effects on the AIF function and clinical phenotype was observed only for the G308E aberration, drastically damaging both the redox properties of AIF and mitochondrial respiration. In contrast, only minimal or mild changes were detected in the structure/function of AIF V243L and G338E, respectively, indicating that a marked decrease in their cellular expression likely triggers the disease. Alterations in the structure and redox activity of AIF G262S, on the other hand, were more severe than could be predicted based on the clinical phenotype. Together, the results of this and previous studies allow to conclude that the phenotypic variability and severity of the AIFM1-related disorders depend on which AIF feature is predominantly affected (i.e., cellular production level, structure, redox or apoptogenic function) and to what extent. Only a drastic decrease in the expression level or/and redox activity of AIF tends to cause an early and severe neurodegeneration, whereas less pronounced changes in the AIF properties could lead to a broad range of slowly progressive neurological disorders.


    Organizational Affiliation

    Department of Molecular Biology and Biochemistry, University of California, Irvine, CA 92697-3900, USA. Electronic address: sevrioui@uci.edu.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
APOPTOSIS-INDUCING FACTOR 1, MITOCHONDRIAL
A, B
515Homo sapiensMutation(s): 1 
Gene Names: AIFM1 (AIF, PDCD8)
EC: 1.1.1.-
Find proteins for O95831 (Homo sapiens)
Go to Gene View: AIFM1
Go to UniProtKB:  O95831
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download SDF File 
Download CCD File 
A, B
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
TRS
Query on TRS

Download SDF File 
Download CCD File 
B
2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
TRIS BUFFER
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.172 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 90.840α = 90.00
b = 114.380β = 90.00
c = 121.260γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
REFMACrefinement
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2015-12-30 
  • Released Date: 2016-05-11 
  • Deposition Author(s): Sevrioukova, I.

Revision History 

  • Version 1.0: 2016-05-11
    Type: Initial release
  • Version 1.1: 2016-05-18
    Type: Database references
  • Version 1.2: 2016-05-25
    Type: Database references
  • Version 1.3: 2016-09-28
    Type: Database references