Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 6-mer - A2B2C2 

Biological assembly 1 generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | Electron Density

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - ABC 

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

Macromolecule Content

• Total Structure Weight: 51436.13 
• Atom Count: 3455 
• Residue Count: 478 
• Unique protein chains: 3

3H0T

Hepcidin-Fab complex

• DOI: 10.2210/pdb3H0T/pdb

• Classification: IMMUNE SYSTEM/Antimicrobial Protein
• Organism(s): Homo sapiens
• Expression System: Cricetulus griseus, Escherichia coli


• Deposited: 2009-04-10 Released: 2009-06-23 
• Deposition Author(s): Syed, R., Li, V.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.89 Å
• R-Value Free: 0.251 
• R-Value Work: 0.202 

Literature

Hepcidin revisited, disulfide connectivity, dynamics, and structure.

Jordan, J.B., Poppe, L., Haniu, M., Arvedson, T., Syed, R., Li, V., Kohno, H., Kim, H., Schnier, P.D., Harvey, T.S., Miranda, L.P., Cheetham, J., Sasu, B.J.

(2009) J.Biol.Chem. 284: 24155-24167

• PubMed: 19553669 
• DOI: 10.1074/jbc.M109.017764
• Primary Citation of Related Structures:  
  2KEF


• PubMed Abstract: 
  

Hepcidin is a tightly folded 25-residue peptide hormone containing four disulfide bonds, which has been shown to act as the principal regulator of iron homeostasis in vertebrates. We used multiple techniques to demonstrate a disulfide bonding pattern for hepcidin different from that previously published. All techniques confirmed the following disulfide bond connectivity: Cys(1)-Cys(8), Cys(3)-Cys(6), Cys(2)-Cys(4), and Cys(5)-Cys(7). NMR studies reveal a new model for hepcidin that, at ambient temperatures, interconverts between two different conformations, which could be individually resolved by temperature variation. Using these methods, the solution structure of hepcidin was determined at 325 and 253 K in supercooled water. X-ray analysis of a co-crystal with Fab appeared to stabilize a hepcidin conformation similar to the high temperature NMR structure.

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Organizational Affiliation: 

Department of Molecular Structure, Amgen, Inc., Thousand Oaks, California 91320, USA. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Fab fragment, Light chain	A	216	N/A	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
Fab fragment, Heavy chain	B	237	N/A	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
Hepcidin	C	25	Homo sapiens	Mutation(s): 0  Gene Names: HAMP (HEPC, LEAP1)
Find proteins for P81172 (Homo sapiens) Go to Gene View: HAMP Go to UniProtKB:  P81172

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.89 Å
• R-Value Free: 0.251 
• R-Value Work: 0.202 
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 174.077	α = 90.00
b = 52.169	β = 99.24
c = 65.630	γ = 90.00

Software Package:

Software Name	Purpose
HKL-2000	data reduction
EPMR	phasing
ADSC	data collection
HKL-2000	data scaling
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2009-04-10 
• Released Date: 2009-06-23 
• Deposition Author(s): Syed, R., Li, V.

Revision History 

• Version 1.0: 2009-06-23
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Version format compliance