1LQB

Crystal structure of a hydroxylated HIF-1 alpha peptide bound to the pVHL/elongin-C/elongin-B complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.225 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structural basis for the recognition of hydroxyproline in HIF-1 alpha by pVHL.

Hon, W.C., Wilson, M.I., Harlos, K., Claridge, T.D., Schofield, C.J., Pugh, C.W., Maxwell, P.H., Ratcliffe, P.J., Stuart, D.I., Jones, E.Y.

(2002) Nature 417: 975-978

  • DOI: 10.1038/nature00767
  • Primary Citation of Related Structures:  
    1LQB

  • PubMed Abstract: 

    • Hypoxia-inducible factor-1 (HIF-1) is a transcriptional complex that controls cellular and systemic homeostatic responses to oxygen availability. HIF-1 alpha is the oxygen-regulated subunit of HIF-1, an alpha beta heterodimeric complex. HIF-1 alpha is stable in hypoxia, but in the presence of oxygen it is targeted for proteasomal degradation by the ubiquitination complex pVHL, the protein of the von Hippel Lindau (VHL) tumour suppressor gene and a component of an E3 ubiquitin ligase complex ...

    Hypoxia-inducible factor-1 (HIF-1) is a transcriptional complex that controls cellular and systemic homeostatic responses to oxygen availability. HIF-1 alpha is the oxygen-regulated subunit of HIF-1, an alpha beta heterodimeric complex. HIF-1 alpha is stable in hypoxia, but in the presence of oxygen it is targeted for proteasomal degradation by the ubiquitination complex pVHL, the protein of the von Hippel Lindau (VHL) tumour suppressor gene and a component of an E3 ubiquitin ligase complex. Capture of HIF-1 alpha by pVHL is regulated by hydroxylation of specific prolyl residues in two functionally independent regions of HIF-1 alpha. The crystal structure of a hydroxylated HIF-1 alpha peptide bound to VCB (pVHL, elongins C and B) and solution binding assays reveal a single, conserved hydroxyproline-binding pocket in pVHL. Optimized hydrogen bonding to the buried hydroxyprolyl group confers precise discrimination between hydroxylated and unmodified prolyl residues. This mechanism provides a new focus for development of therapeutic agents to modulate cellular responses to hypoxia.

    Organizational Affiliation: 

    Division of Structural Biology, Henry Wellcome Building of Genomic Medicine, Roosevelt Drive, Oxford OX3 7BN, UK.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Elongin B A118Homo sapiensMutation(s): 0 
Gene Names: ELOB, TCEB2
Find proteins for Q15370 (Homo sapiens)
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PHAROS:  Q15370
GTEx:  ENSG00000103363
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Elongin C B96Homo sapiensMutation(s): 0 
Gene Names: ELOC, TCEB1
Find proteins for Q15369 (Homo sapiens)
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PHAROS:  Q15369
GTEx:  ENSG00000154582
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
von hippel-lindau disease tumor supressor C162Homo sapiensMutation(s): 0 
Gene Names: VHL
Find proteins for P40337 (Homo sapiens)
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PHAROS:  P40337
GTEx:  ENSG00000134086
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Hypoxia-inducible factor 1 ALPHA D34N/AMutation(s): 1 
Find proteins for Q16665 (Homo sapiens)
Explore Q16665 
Go to UniProtKB:  Q16665
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PHAROS:  Q16665
GTEx:  ENSG00000100644
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download Ideal Coordinates CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
HYP
Query on HYP		DL-PEPTIDE LINKINGC5 H9 N O3PRO
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.225 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.94α = 90
b = 58.94β = 90
c = 243.38γ = 90
Software Package:
Software NamePurpose
EPMRphasing
CNSrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-07-03
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance