3H0T

Hepcidin-Fab complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.205 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


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

  • DOI: 10.1074/jbc.M109.017764
  • Primary Citation of Related Structures:  
    2KEF, 3H0T

  • 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 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.

    Organizational Affiliation: 

    Department of Molecular Structure, Amgen, Inc., Thousand Oaks, California 91320, USA. jbjordan@amgen.com



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Fab fragment, Light chain A216Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Fab fragment, Heavy chain B237Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Hepcidin C25Homo sapiensMutation(s): 0 
Gene Names: HAMP, HEPC, hepcidin, LEAP1, UNQ487/PRO1003
Find proteins for P81172 (Homo sapiens)
Explore P81172 
Go to UniProtKB:  P81172
NIH Common Fund Data Resources
PHAROS:  P81172
GTEx:  ENSG00000105697
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.205 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 174.077α = 90
b = 52.169β = 99.24
c = 65.63γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
EPMRphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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View more in-depth experimental data

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
    Changes: Version format compliance