2WG4

Crystal structure of the complex between human hedgehog-interacting protein HIP and sonic hedgehog without calcium


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.234 

wwPDB Validation 3D Report Full Report


This is version 1.3 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:  

  • 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-interactin ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SONIC HEDGEHOG PROTEIN N-PRODUCT
A
155Mus musculusMutation(s): 0 
Gene Names: Shh (Hhg1)
Find proteins for Q62226 (Mus musculus)
Go to UniProtKB:  Q62226
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HEDGEHOG-INTERACTING PROTEIN
B
457Homo sapiensMutation(s): 0 
Gene Names: HHIP (HIP)
Find proteins for Q96QV1 (Homo sapiens)
Go to Gene View: HHIP
Go to UniProtKB:  Q96QV1
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

Download SDF File 
Download CCD File 
B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.234 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 88.055α = 90.00
b = 88.055β = 90.00
c = 171.946γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data reduction
PHENIXrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-06-30
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-08
    Type: Source and taxonomy