1H2M

Factor Inhibiting HIF-1 alpha in complex with HIF-1 alpha fragment peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of Factor-Inhibiting Hypoxia-Inducible Factor (Hif) Reveals Mechanism of Oxidative Modification of Hif-1Alpha

Elkins, J.M.Hewitson, K.S.McNeill, L.A.Seibel, J.F.Schlemminger, I.Pugh, C.Ratcliffe, P.Schofield, C.J.

(2003) J Biol Chem 278: 1802-1806

  • DOI: 10.1074/jbc.C200644200
  • Primary Citation of Related Structures:  
    1H2N, 1H2M, 1H2L, 1H2K

  • PubMed Abstract: 
  • The activity of the transcription factor hypoxia-inducible factor (HIF) is regulated by oxygen-dependent hydroxylation. Under normoxic conditions, hydroxylation of proline residues triggers destruction of its alpha-subunit while hydroxylation of Asn(803) in the C-terminal transactivation domain of HIF-1 alpha (CAD) prevents its interaction with p300 ...

    The activity of the transcription factor hypoxia-inducible factor (HIF) is regulated by oxygen-dependent hydroxylation. Under normoxic conditions, hydroxylation of proline residues triggers destruction of its alpha-subunit while hydroxylation of Asn(803) in the C-terminal transactivation domain of HIF-1 alpha (CAD) prevents its interaction with p300. Here we report crystal structures of the asparagine hydroxylase (factor-inhibiting HIF, FIH) complexed with Fe((II)), 2-oxoglutarate cosubstrate, and CAD fragments, which reveal the structural basis of HIF modification. CAD binding to FIH occurs via an induced fit process at two distinct interaction sites. At the hydroxylation site CAD adopts a loop conformation, contrasting with a helical conformation for the same residues when bound to p300. Asn(803) of CAD is buried and precisely orientated in the active site such that hydroxylation occurs at its beta-carbon. Together with structures with the inhibitors Zn((II)) and N-oxaloylglycine, analysis of the FIH-CAD complexes will assist design of hydroxylase inhibitors with proangiogenic properties. Conserved structural motifs within FIH imply it is one of an extended family of Fe((II)) oxygenases involved in gene regulation.


    Organizational Affiliation

    Oxford Centre for Molecular Sciences and the Dyson Perrins Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QY, United Kingdom.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FACTOR INHIBITING HIF1A349Homo sapiensMutation(s): 0 
Gene Names: HIF1ANFIH1
EC: 1.14.11.30 (UniProt), 1.14.11 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NWT6 (Homo sapiens)
Explore Q9NWT6 
Go to UniProtKB:  Q9NWT6
PHAROS:  Q9NWT6
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HYPOXIA-INDUCIBLE FACTOR 1 ALPHAB [auth S]52Homo sapiensMutation(s): 0 
Gene Names: HIF1ABHLHE78MOP1PASD8
UniProt & NIH Common Fund Data Resources
Find proteins for Q16665 (Homo sapiens)
Explore Q16665 
Go to UniProtKB:  Q16665
PHAROS:  Q16665
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OGA
Query on OGA

Download Ideal Coordinates CCD File 
D [auth A]N-OXALYLGLYCINE
C4 H5 N O5
BIMZLRFONYSTPT-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
E [auth A], F [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
ZN
Query on ZN

Download Ideal Coordinates CCD File 
C [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
OGAKi:  1200000   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.249α = 90
b = 86.249β = 90
c = 148.26γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-11-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2018-02-21
    Changes: Database references