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 

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

  • 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 ...

    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

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fab fragment, Light chain
A
216N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fab fragment, Heavy chain
B
237N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Hepcidin
C
25Homo sapiensGene 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 = 174.077α = 90.00
b = 52.169β = 99.24
c = 65.630γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
EPMRphasing
ADSCdata collection
HKL-2000data scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



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