2HES

Cytosolic Iron-sulphur Assembly Protein- 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of the Yeast WD40 Domain Protein Cia1, a Component Acting Late in Iron-Sulfur Protein Biogenesis.

Srinivasan, V.Netz, D.J.Webert, H.Mascarenhas, J.Pierik, A.J.Michel, H.Lill, R.

(2007) Structure 15: 1246-1257

  • DOI: 10.1016/j.str.2007.08.009

  • PubMed Abstract: 
  • The WD40-repeat protein Cia1 is an essential, conserved member of the cytosolic iron-sulfur (Fe/S) protein assembly (CIA) machinery in eukaryotes. Here, we report the crystal structure of Saccharomyces cerevisiae Cia1 to 1.7 A resolution. The structu ...

    The WD40-repeat protein Cia1 is an essential, conserved member of the cytosolic iron-sulfur (Fe/S) protein assembly (CIA) machinery in eukaryotes. Here, we report the crystal structure of Saccharomyces cerevisiae Cia1 to 1.7 A resolution. The structure folds into a beta propeller with seven blades pseudo symmetrically arranged around a central axis. Structure-based sequence alignment of Cia1 proteins shows that the WD40 propeller core elements are highly conserved. Site-directed mutagenesis of amino acid residues in loop regions with high solvent accessibility identified that the conserved top surface residue R127 performs a critical function: the R127 mutant cells grew slowly and were impaired in cytosolic Fe/S protein assembly. Human Ciao1, which reportedly interacts with the Wilms' tumor suppressor, WT1, is structurally similar to yeast Cia1. We show that Ciao1 can functionally replace Cia1 and support cytosolic Fe/S protein biogenesis. Hence, our structural and biochemical studies indicate the conservation of Cia1 function in eukaryotes.


    Organizational Affiliation

    Department of Molecular Membrane Biology, Max-Planck Institute for Biophysics, Max-von-Laue Str. 3, D-60438 Frankfurt/M, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ydr267cp
X
330Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: CIA1
Find proteins for Q05583 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q05583
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
X
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.224 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 35.211α = 90.00
b = 70.026β = 90.00
c = 130.366γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
REFMACrefinement
SCALEPACKdata scaling
SHARPphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-07-03
    Type: Initial release
  • Version 1.1: 2007-10-17
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-18
    Type: Refinement description