4MYC

Structure of the mitochondrial ABC transporter, Atm1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.06 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.251 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structures of nucleotide-free and glutathione-bound mitochondrial ABC transporter Atm1.

Srinivasan, V.Pierik, A.J.Lill, R.

(2014) Science 343: 1137-1140

  • DOI: 10.1126/science.1246729
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The yeast mitochondrial ABC transporter Atm1, in concert with glutathione, functions in the export of a substrate required for cytosolic-nuclear iron-sulfur protein biogenesis and cellular iron regulation. Defects in the human ortholog ABCB7 cause th ...

    The yeast mitochondrial ABC transporter Atm1, in concert with glutathione, functions in the export of a substrate required for cytosolic-nuclear iron-sulfur protein biogenesis and cellular iron regulation. Defects in the human ortholog ABCB7 cause the sideroblastic anemia XLSA/A. Here, we report the crystal structures of free and glutathione-bound Atm1 in inward-facing, open conformations at 3.06- and 3.38-angstrom resolution, respectively. The glutathione binding site includes a residue mutated in XLSA/A and is located close to the inner membrane surface in a large cavity. The two nucleotide-free adenosine 5'-triphosphate binding domains do not interact yet are kept in close vicinity through tight interaction of the two C-terminal α-helices of the Atm1 dimer. The resulting protein stabilization may be a common structural feature of all ABC exporters.


    Organizational Affiliation

    Institut für Zytobiologie, Philipps-Universität Marburg, Robert-Koch-Strasse 6, 35032 Marburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Iron-sulfur clusters transporter ATM1, mitochondrial
A, C, B
598Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: ATM1 (MDY)
Membrane protein
mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
ATP Binding Cassette (ABC) Transporters
Protein: 
Atm1 mitochondrial ABC transporter, apo form
Find proteins for P40416 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P40416
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.06 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.251 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 156.618α = 90.00
b = 156.618β = 90.00
c = 520.562γ = 120.00
Software Package:
Software NamePurpose
PHENIXmodel building
PHENIXphasing
XDSdata reduction
PHENIXrefinement
SCALAdata scaling
SHELXCDphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-09-27 
  • Released Date: 2014-03-26 
  • Deposition Author(s): Srinivasan, V.

Revision History 

  • Version 1.0: 2014-03-26
    Type: Initial release
  • Version 1.1: 2017-11-15
    Type: Refinement description