3HO5

Crystal structure of Hedgehog-interacting protein (HHIP) and Sonic hedgehog (SHH) complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.234 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The structure of SHH in complex with HHIP reveals a recognition role for the Shh pseudo active site in signaling.

Bosanac, I.Maun, H.R.Scales, S.J.Wen, X.Lingel, A.Bazan, J.F.de Sauvage, F.J.Hymowitz, S.G.Lazarus, R.A.

(2009) Nat Struct Mol Biol 16: 691-697

  • DOI: 10.1038/nsmb.1632
  • Primary Citation of Related Structures:  
    3HO3, 3HO4, 3HO5

  • PubMed Abstract: 
  • Hedgehog (Hh) signaling is crucial for many aspects of embryonic development, whereas dysregulation of this pathway is associated with several types of cancer. Hedgehog-interacting protein (Hhip) is a surface receptor antagonist that is equipotent against all three mammalian Hh homologs ...

    Hedgehog (Hh) signaling is crucial for many aspects of embryonic development, whereas dysregulation of this pathway is associated with several types of cancer. Hedgehog-interacting protein (Hhip) is a surface receptor antagonist that is equipotent against all three mammalian Hh homologs. The crystal structures of human HHIP alone and bound to Sonic hedgehog (SHH) now reveal that HHIP is comprised of two EGF domains and a six-bladed beta-propeller domain. In the complex structure, a critical loop from HHIP binds the pseudo active site groove of SHH and directly coordinates its Zn2+ cation. Notably, sequence comparisons of this SHH binding loop with the Hh receptor Patched (Ptc1) ectodomains and HHIP- and PTC1-peptide binding studies suggest a 'patch for Patched' at the Shh pseudo active site; thus, we propose a role for Hhip as a structural decoy receptor for vertebrate Hh.


    Organizational Affiliation

    Department of Structural Biology, Genentech, Inc., South San Francisco, California, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Hedgehog-interacting proteinA, B481Homo 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
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Sonic hedgehog proteinC [auth H]169Homo sapiensMutation(s): 0 
Gene Names: SHH
UniProt & NIH Common Fund Data Resources
Find proteins for Q15465 (Homo sapiens)
Explore Q15465 
Go to UniProtKB:  Q15465
PHAROS:  Q15465
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
D [auth A], E [auth H]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
F [auth H], G [auth H]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.234 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.618α = 90
b = 101.618β = 90
c = 302.83γ = 120
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-06-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance