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 

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:  

  • 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 ag ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hedgehog-interacting protein
A, B
481Homo sapiensMutation(s): 0 
Gene Names: HHIP (HIP)
Find proteins for Q96QV1 (Homo sapiens)
Go to Gene View: HHIP
Go to UniProtKB:  Q96QV1
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Sonic hedgehog protein
H
169Homo sapiensMutation(s): 0 
Gene Names: SHH
Find proteins for Q15465 (Homo sapiens)
Go to Gene View: SHH
Go to UniProtKB:  Q15465
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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

Download SDF File 
Download CCD File 
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 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 101.618α = 90.00
b = 101.618β = 90.00
c = 302.830γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
Blu-Icedata collection
HKL-2000data scaling
REFMACrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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