1HRK

CRYSTAL STRUCTURE OF HUMAN FERROCHELATASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The 2.0 A structure of human ferrochelatase, the terminal enzyme of heme biosynthesis.

Wu, C.K.Dailey, H.A.Rose, J.P.Burden, A.Sellers, V.M.Wang, B.C.

(2001) Nat.Struct.Mol.Biol. 8: 156-160

  • DOI: 10.1038/84152
  • Also Cited By: 2PNJ, 2PO5, 2PO7

  • PubMed Abstract: 
  • Human ferrochelatase (E.C. 4.99.1.1) is a homodimeric (86 kDa) mitochondrial membrane-associated enzyme that catalyzes the insertion of ferrous iron into protoporphyrin to form heme. We have determined the 2.0 A structure from the single wavelength i ...

    Human ferrochelatase (E.C. 4.99.1.1) is a homodimeric (86 kDa) mitochondrial membrane-associated enzyme that catalyzes the insertion of ferrous iron into protoporphyrin to form heme. We have determined the 2.0 A structure from the single wavelength iron anomalous scattering signal. The enzyme contains two NO-sensitive and uniquely coordinated [2Fe-2S] clusters. Its membrane association is mediated in part by a 12-residue hydrophobic lip that also forms the entrance to the active site pocket. The positioning of highly conserved residues in the active site in conjunction with previous biochemical studies support a catalytic model that may have significance in explaining the enzymatic defects that lead to the human inherited disease erythropoietic protoporphyria.


    Related Citations: 
    • Human Ferrochelatase: crystallization, characterization of the [2Fe-2S] cluster and determination that the enzyme is a homodimer
      Burden, A.E.,Wu, C.-K.,Dailey, T.A.,Busch, J.L.H.,Dhawan, I.K.,Rose, J.P.,Wang, B.C.,Dailey, H.A.
      (1999) Biochim.Biophys.Acta 1435: 191


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Georgia, Athens, Georgia 30602-7229, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FERROCHELATASE
A, B
359Homo sapiensGene Names: FECH
EC: 4.99.1.1
Find proteins for P22830 (Homo sapiens)
Go to Gene View: FECH
Go to UniProtKB:  P22830
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CHD
Query on CHD

Download SDF File 
Download CCD File 
A, B
CHOLIC ACID
C24 H40 O5
BHQCQFFYRZLCQQ-OELDTZBJSA-N
 Ligand Interaction
FES
Query on FES

Download SDF File 
Download CCD File 
A, B
FE2/S2 (INORGANIC) CLUSTER
Fe2 S2
NIXDOXVAJZFRNF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.202 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 93.433α = 90.00
b = 87.569β = 90.00
c = 109.699γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
ISASphasing
ISASmodel building
CrystalCleardata reduction
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-06-22
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description