Crystal structure of Eremococcus coleocola manganese transporter

Experimental Data Snapshot

  • Resolution: 3.30 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.234 

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This is version 1.3 of the entry. See complete history


Structural and mechanistic basis of proton-coupled metal ion transport in the SLC11/NRAMP family.

Ehrnstorfer, I.A.Manatschal, C.Arnold, F.M.Laederach, J.Dutzler, R.

(2017) Nat Commun 8: 14033-14033

  • DOI: https://doi.org/10.1038/ncomms14033
  • Primary Citation of Related Structures:  
    5M87, 5M8A, 5M8J, 5M8K

  • PubMed Abstract: 

    Secondary active transporters of the SLC11/NRAMP family catalyse the uptake of iron and manganese into cells. These proteins are highly conserved across all kingdoms of life and thus likely share a common transport mechanism. Here we describe the structural and functional properties of the prokaryotic SLC11 transporter EcoDMT. Its crystal structure reveals a previously unknown outward-facing state of the protein family. In proteoliposomes EcoDMT mediates proton-coupled uptake of manganese at low micromolar concentrations. Mutants of residues in the transition-metal ion-binding site severely affect transport, whereas a mutation of a conserved histidine located near this site results in metal ion transport that appears uncoupled to proton transport. Combined with previous results, our study defines the conformational changes underlying transition-metal ion transport in the SLC11 family and it provides molecular insight to its coupling to protons.

  • Organizational Affiliation

    Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Divalent metal cation transporter MntH519Eremococcus coleocola ACS-139-V-Col8Mutation(s): 0 
Gene Names: mntHHMPREF9257_1603
Membrane Entity: Yes 
Find proteins for E4KPW4 (Eremococcus coleocola ACS-139-V-Col8)
Explore E4KPW4 
Go to UniProtKB:  E4KPW4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupE4KPW4
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on DMU

Download Ideal Coordinates CCD File 
C22 H42 O11
Experimental Data & Validation

Experimental Data

  • Resolution: 3.30 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.234 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 149.2α = 90
b = 81.65β = 107.57
c = 96.23γ = 90
Software Package:
Software NamePurpose
XDSdata scaling
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerland--

Revision History  (Full details and data files)

  • Version 1.0: 2017-01-11
    Type: Initial release
  • Version 1.1: 2017-01-18
    Changes: Database references
  • Version 1.2: 2017-09-13
    Changes: Author supporting evidence
  • Version 1.3: 2024-05-08
    Changes: Data collection, Database references