Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - AB 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - AB 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 88175.19 
• Atom Count: 6076 
• Residue Count: 748 
• Unique protein chains: 2

1A6Z

HFE (HUMAN) HEMOCHROMATOSIS PROTEIN

• DOI: 10.2210/pdb1A6Z/pdb

• Classification: MHC CLASS I COMPLEX
• Organism(s): Homo sapiens
• Expression System: Cricetulus griseus


• Deposited: 1998-03-04 Released: 1999-03-23 
• Deposition Author(s): Lebron, J.A., Bennett, M.J., Vaughn, D.E., Chirino, A.J., Snow, P.M., Mintier, G.A., Feder, J.N., Bjorkman, P.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.6 Å
• R-Value Free: 0.277 
• R-Value Work: 0.233 

Literature

Crystal structure of the hemochromatosis protein HFE and characterization of its interaction with transferrin receptor.

Lebron, J.A., Bennett, M.J., Vaughn, D.E., Chirino, A.J., Snow, P.M., Mintier, G.A., Feder, J.N., Bjorkman, P.J.

(1998) Cell 93: 111-123

• PubMed: 9546397 


• PubMed Abstract: 
  

HFE is an MHC-related protein that is mutated in the iron-overload disease hereditary hemochromatosis. HFE binds to transferrin receptor (TfR) and reduces its affinity for iron-loaded transferrin, implicating HFE in iron metabolism. The 2.6 A crystal structure of HFE reveals the locations of hemochromatosis mutations and a patch of histidines that could be involved in pH-dependent interactions. We also demonstrate that soluble TfR and HFE bind tightly at the basic pH of the cell surface, but not at the acidic pH of intracellular vesicles. TfR:HFE stoichiometry (2:1) differs from TfR:transferrin stoichiometry (2:2), implying a different mode of binding for HFE and transferrin to TfR, consistent with our demonstration that HFE, transferrin, and TfR form a ternary complex.

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Organizational Affiliation: 

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

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
HFE	A, C	275	Homo sapiens	Mutation(s): 0  Gene Names: HFE (HLAH)
Find proteins for Q30201 (Homo sapiens) Go to Gene View: HFE Go to UniProtKB:  Q30201

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
BETA-2-MICROGLOBULIN	B, D	99	Homo sapiens	Mutation(s): 0  Gene Names: B2M
Find proteins for P61769 (Homo sapiens) Go to Gene View: B2M Go to UniProtKB:  P61769

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.6 Å
• R-Value Free: 0.277 
• R-Value Work: 0.233 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 68.800	α = 90.00
b = 100.100	β = 90.00
c = 147.600	γ = 90.00

Software Package:

Software Name	Purpose
X-PLOR	refinement
DENZO	data reduction
AMoRE	phasing
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1998-03-04 
• Released Date: 1999-03-23 
• Deposition Author(s): Lebron, J.A., Bennett, M.J., Vaughn, D.E., Chirino, A.J., Snow, P.M., Mintier, G.A., Feder, J.N., Bjorkman, P.J.

Revision History 

• Version 1.0: 1999-03-23
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance