2IUB

Crystal structure of a divalent metal ion transporter CorA at 2.9 A resolution.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.262 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal Structure of a Divalent Metal Ion Transporter Cora at 2.9 Angstrom Resolution.

Eshaghi, S.Niegowski, D.Kohl, A.Martinez Molina, D.Lesley, S.A.Nordlund, P.

(2006) Science 313: 354

  • DOI: 10.1126/science.1127121
  • Primary Citation of Related Structures:  
    2IUB

  • PubMed Abstract: 
  • CorA family members are ubiquitously distributed transporters of divalent metal cations and are considered to be the primary Mg2+ transporter of Bacteria and Archaea. We have determined a 2.9 angstrom resolution structure of CorA from Thermotoga maritima that reveals a pentameric cone-shaped protein ...

    CorA family members are ubiquitously distributed transporters of divalent metal cations and are considered to be the primary Mg2+ transporter of Bacteria and Archaea. We have determined a 2.9 angstrom resolution structure of CorA from Thermotoga maritima that reveals a pentameric cone-shaped protein. Two potential regulatory metal binding sites are found in the N-terminal domain that bind both Mg2+ and Co2+. The structure of CorA supports an efflux system involving dehydration and rehydration of divalent metal ions potentially mediated by a ring of conserved aspartate residues at the cytoplasmic entrance and a carbonyl funnel at the periplasmic side of the pore.


    Organizational Affiliation

    Division of Biophysics, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-171 77 Stockholm, Sweden. Said.Eshaghi@ki.se



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DIVALENT CATION TRANSPORT-RELATED PROTEIN
A, B, C, D, E, F, G, H
A, B, C, D, E, F, G, H, I, J
363Thermotoga maritimaMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for Q9WZ31 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8))
Explore Q9WZ31 
Go to UniProtKB:  Q9WZ31
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download Ideal Coordinates CCD File 
AA [auth F], DA [auth G], EA [auth G], K [auth A], N [auth B], R [auth D], S [auth D]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
BA [auth F] , CA [auth F] , FA [auth G] , GA [auth G] , HA [auth G] , IA [auth H] , JA [auth J] , KA [auth J] , 
BA [auth F],  CA [auth F],  FA [auth G],  GA [auth G],  HA [auth G],  IA [auth H],  JA [auth J],  KA [auth J],  L [auth A],  LA [auth J],  M [auth A],  O [auth B],  P [auth C],  Q [auth C],  T [auth D],  U [auth D],  V [auth D],  W [auth D],  X [auth D],  Y [auth E],  Z [auth F]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.262 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 116.23α = 90
b = 151.46β = 98.88
c = 143.32γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-08-03
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance