1DE4

HEMOCHROMATOSIS PROTEIN HFE COMPLEXED WITH TRANSFERRIN RECEPTOR

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.231 

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


Literature

Crystal structure of the hereditary haemochromatosis protein HFE complexed with transferrin receptor.

Bennett, M.J., Lebron, J.A., Bjorkman, P.J.

(2000) Nature 403: 46-53

  • DOI: 10.1038/47417
  • Primary Citation of Related Structures:  
    1DE4

  • PubMed Abstract: 

    • HFE is related to major histocompatibility complex (MHC) class I proteins and is mutated in the iron-overload disease hereditary haemochromatosis. HFE binds to the transferrin receptor (TfR), a receptor by which cells acquire iron-loaded transferrin. The 2 ...

    HFE is related to major histocompatibility complex (MHC) class I proteins and is mutated in the iron-overload disease hereditary haemochromatosis. HFE binds to the transferrin receptor (TfR), a receptor by which cells acquire iron-loaded transferrin. The 2.8 A crystal structure of a complex between the extracellular portions of HFE and TfR shows two HFE molecules which grasp each side of a twofold symmetric TfR dimer. On a cell membrane containing both proteins, HFE would 'lie down' parallel to the membrane, such that the HFE helices that delineate the counterpart of the MHC peptide-binding groove make extensive contacts with helices in the TfR dimerization domain. The structures of TfR alone and complexed with HFE differ in their domain arrangement and dimer interfaces, providing a mechanism for communicating binding events between TfR chains. The HFE-TfR complex suggests a binding site for transferrin on TfR and sheds light upon the function of HFE in regulating iron homeostasis.

    Organizational Affiliation: 

    Division of Biology, California Institute of Technology, Pasadena 91125, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HEMOCHROMATOSIS PROTEINA, D, G275Homo sapiensMutation(s): 0 
Gene Names: HFE, HLAH
UniProt & NIH Common Fund Data Resources
Find proteins for Q30201 (Homo sapiens)
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Go to UniProtKB:  Q30201
PHAROS:  Q30201
GTEx:  ENSG00000010704 
Entity Groups  
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UniProt GroupQ30201
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
BETA-2-MICROGLOBULINB, E, H99Homo sapiensMutation(s): 0 
Gene Names: B2M, CDABP0092, HDCMA22P
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Find proteins for P61769 (Homo sapiens)
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Go to UniProtKB:  P61769
PHAROS:  P61769
GTEx:  ENSG00000166710 
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UniProt GroupP61769
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
TRANSFERRIN RECEPTORC, F, I640Homo sapiensMutation(s): 0 
Gene Names: TFRC
UniProt & NIH Common Fund Data Resources
Find proteins for P02786 (Homo sapiens)
Explore P02786 
Go to UniProtKB:  P02786
PHAROS:  P02786
GTEx:  ENSG00000072274 
Entity Groups  
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UniProt GroupP02786
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.231 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 110.4α = 90
b = 144.4β = 93.6
c = 327.1γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SHARPphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-01-19
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary