2WFX

Crystal structure of the complex between human hedgehog-interacting protein HIP and Sonic Hedgehog in the presence of calcium


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.245 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Insights Into Hedgehog Ligand Sequestration by the Human Hedgehog-Interacting Protein Hip

Bishop, B.Aricescu, A.R.Harlos, K.O'Callaghan, C.A.Jones, E.Y.Siebold, C.

(2009) Nat Struct Mol Biol 16: 698

  • DOI: 10.1038/nsmb.1607
  • Primary Citation of Related Structures:  
    2WFX, 2WFQ, 2WFR, 2WG3, 2WG4, 2WFT

  • PubMed Abstract: 
  • Hedgehog (Hh) morphogens have fundamental roles in development, whereas dysregulation of Hh signaling leads to disease. Multiple cell-surface receptors are responsible for transducing and/or regulating Hh signals. Among these, the Hedgehog-interacting protein (Hhip) is a highly conserved, vertebrate-specific inhibitor of Hh signaling ...

    Hedgehog (Hh) morphogens have fundamental roles in development, whereas dysregulation of Hh signaling leads to disease. Multiple cell-surface receptors are responsible for transducing and/or regulating Hh signals. Among these, the Hedgehog-interacting protein (Hhip) is a highly conserved, vertebrate-specific inhibitor of Hh signaling. We have solved a series of crystal structures for the human HHIP ectodomain and Desert hedgehog (DHH) in isolation, as well as HHIP in complex with DHH (HHIP-DHH) and Sonic hedgehog (Shh) (HHIP-Shh), with and without Ca2+. The interaction determinants, confirmed by biophysical studies and mutagenesis, reveal previously uncharacterized and distinct functions for the Hh Zn2+ and Ca2+ binding sites--functions that may be common to all vertebrate Hh proteins. Zn2+ makes a key contribution to the Hh-HHIP interface, whereas Ca2+ is likely to prevent electrostatic repulsion between the two proteins, suggesting an important modulatory role. This interplay of several metal binding sites suggests a tuneable mechanism for regulation of Hh signaling.


    Organizational Affiliation

    Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SONIC HEDGEHOG PROTEIN N-PRODUCTA152Mus musculusMutation(s): 0 
Gene Names: ShhHhg1
UniProt & NIH Common Fund Data Resources
Find proteins for Q62226 (Mus musculus)
Explore Q62226 
Go to UniProtKB:  Q62226
IMPC:  MGI:98297
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HEDGEHOG-INTERACTING PROTEINB457Homo sapiensMutation(s): 0 
Gene Names: HHIPHIPUNQ5825/PRO19644
UniProt & NIH Common Fund Data Resources
Find proteins for Q96QV1 (Homo sapiens)
Explore Q96QV1 
Go to UniProtKB:  Q96QV1
PHAROS:  Q96QV1
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.245 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.15α = 90
b = 89.15β = 90
c = 171.429γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-06-30
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance