2QFI

Structure of the zinc transporter YiiP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.329 
  • R-Value Work: 0.322 
  • R-Value Observed: 0.323 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of the zinc transporter YiiP.

Lu, M.Fu, D.

(2007) Science 317: 1746-1748

  • DOI: 10.1126/science.1143748
  • Primary Citation of Related Structures:  
    2QFI

  • PubMed Abstract: 
  • YiiP is a membrane transporter that catalyzes Zn2+/H+ exchange across the inner membrane of Escherichia coli. Mammalian homologs of YiiP play critical roles in zinc homeostasis and cell signaling. Here, we report the x-ray structure of YiiP in complex with zinc at 3 ...

    YiiP is a membrane transporter that catalyzes Zn2+/H+ exchange across the inner membrane of Escherichia coli. Mammalian homologs of YiiP play critical roles in zinc homeostasis and cell signaling. Here, we report the x-ray structure of YiiP in complex with zinc at 3.8 angstrom resolution. YiiP is a homodimer held together in a parallel orientation through four Zn2+ ions at the interface of the cytoplasmic domains, whereas the two transmembrane domains swing out to yield a Y-shaped structure. In each protomer, the cytoplasmic domain adopts a metallochaperone-like protein fold; the transmembrane domain features a bundle of six transmembrane helices and a tetrahedral Zn2+ binding site located in a cavity that is open to both the membrane outer leaflet and the periplasm.


    Organizational Affiliation

    Department of Biology, Brookhaven National Laboratory, Upton, NY 11973, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ferrous-iron efflux pump fieFA, B300Escherichia coliMutation(s): 0 
Gene Names: fieF
Membrane Entity: Yes 
UniProt
Find proteins for P69380 (Escherichia coli (strain K12))
Explore P69380 
Go to UniProtKB:  P69380
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.329 
  • R-Value Work: 0.322 
  • R-Value Observed: 0.323 
  • Space Group: P 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.66α = 90
b = 110.839β = 90
c = 130.662γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data collection
HKL-2000data reduction
SCALAdata scaling
SHARPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2007-06-27 
  • Released Date: 2007-10-16 
  • Deposition Author(s): Lu, M.

Revision History  (Full details and data files)

  • Version 1.0: 2007-10-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Derived calculations, Version format compliance