3HYR | pdb_00003hyr

Structural Insight into G Protein Coupling and Regulation of Fe2+ Membrane Transport

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 
    0.287 (Depositor) 
  • R-Value Work: 
    0.225 (Depositor), 0.235 (DCC) 
  • R-Value Observed: 
    0.228 (Depositor) 

wwPDB Validation 3D Report Full Report

Validation slider image for 3HYR

This is version 1.3 of the entry. See complete history. 

Literature

Structural basis of GDP release and gating in G protein coupled Fe2+ transport.

Guilfoyle, A., Maher, M.J., Rapp, M., Clarke, R., Harrop, S., Jormakka, M.

(2009) EMBO J 28: 2677-2685

  • DOI: https://doi.org/10.1038/emboj.2009.208
  • Primary Citation Related Structures: 
    3HYR, 3HYT

  • PubMed Abstract: 

    G proteins are key molecular switches in the regulation of membrane protein function and signal transduction. The prokaryotic membrane protein FeoB is involved in G protein coupled Fe(2+) transport, and is unique in that the G protein is directly tethered to the membrane domain. Here, we report the structure of the soluble domain of FeoB, including the G protein domain, and its assembly into an unexpected trimer. Comparisons between nucleotide free and liganded structures reveal the closed and open state of a central cytoplasmic pore, respectively. In addition, these data provide the first observation of a conformational switch in the nucleotide-binding G5 motif, defining the structural basis for GDP release. From these results, structural parallels are drawn to eukaryotic G protein coupled membrane processes.

    • Organizational Affiliation: 
    • Centenary Institute, Sydney, New South Wales, Australia.

Macromolecule Content 

  • Total Structure Weight: 89.7 kDa 
  • Atom Count: 6,321 
  • Modeled Residue Count: 759 
  • Deposited Residue Count: 810 
  • Unique protein chains: 1

Macromolecules

Find similar proteins by:
|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Ferrous iron transport protein B
A, B, C
270Escherichia coliMutation(s): 0 
Gene Names: feoB, b3409, JW3372
UniProt
Find proteins for P33650 (Escherichia coli (strain K12))
Explore P33650 
Go to UniProtKB:  P33650
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP33650
Sequence Annotations
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Reference Sequence

Small Molecules

Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C
L-PEPTIDE LINKINGC5 H11 N O2 SeMET

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free:  0.287 (Depositor) 
  • R-Value Work:  0.225 (Depositor), 0.235 (DCC) 
  • R-Value Observed: 0.228 (Depositor) 
Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 146.12α = 90
b = 84.44β = 108.46
c = 66.24γ = 90
Software Package:
Software NamePurpose
SHARPphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-08-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2013-11-13
    Changes: Database references
  • Version 1.3: 2024-10-30
    Changes: Data collection, Database references, Derived calculations, Structure summary