Crystal structure of Human Sonic Hedgehog N-terminal domain

Experimental Data Snapshot

  • Resolution: 1.85 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Mapping sonic hedgehog-receptor interactions by steric interference.

Pepinsky, R.B.Rayhorn, P.Day, E.S.Dergay, A.Williams, K.P.Galdes, A.Taylor, F.R.Boriack-Sjodin, P.A.Garber, E.A.

(2000) J Biol Chem 275: 10995-11001

  • DOI: https://doi.org/10.1074/jbc.275.15.10995
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    We have defined regions in the Sonic hedgehog (Shh) molecule that are important for Patched (Ptc) receptor binding by targeting selected surface amino acid residues with probes of diverse sizes and shapes and assessing the effects of these modifications on function. Eleven amino acid residues that surround the surface of the protein were chosen for these studies and mutated to cysteine residues. These cysteines were then selectively modified with thiol-specific probes, and the modified proteins were tested for hedgehog receptor binding activity and their ability to induce differentiation of C3H10T1/2 cells into osteoblasts. Based on these analyses, approximately one-third of the Shh surface can be modified without effect on function regardless of the size of the attachment. These sites are located near to where the C terminus protrudes from the surface of the protein. All other sites were sensitive to modification, indicating that the interaction of Shh with its primary receptor Ptc is mediated over a large surface of the Shh protein. For sites Asn-50 and Ser-156, function was lost with the smallest of the probes tested, indicating that these residues are in close proximity to the Ptc-binding site. The epitope for the neutralizing mAb 5E1 mapped to a close but distinct region of the structure. The structure-activity data provide a unique view of the interactions between Shh and Ptc that is not readily attainable by conventional mapping strategies.

  • Organizational Affiliation

    Biogen, Inc., Cambridge, Massachusetts 02142, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Sonic hedgehog protein
A, B
175Homo sapiensMutation(s): 2 
Gene Names: SHH
UniProt & NIH Common Fund Data Resources
Find proteins for Q15465 (Homo sapiens)
Explore Q15465 
Go to UniProtKB:  Q15465
PHAROS:  Q15465
GTEx:  ENSG00000164690 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ15465
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on SO4

Download Ideal Coordinates CCD File 
D [auth A]
E [auth A]
F [auth A]
H [auth B]
I [auth B]
D [auth A],
E [auth A],
F [auth A],
H [auth B],
I [auth B],
J [auth B],
K [auth B],
L [auth B],
M [auth B]
O4 S
Query on ZN

Download Ideal Coordinates CCD File 
C [auth A],
G [auth B]
Experimental Data & Validation

Experimental Data

  • Resolution: 1.85 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.741α = 90
b = 51.788β = 96.53
c = 69.932γ = 90
Software Package:
Software NamePurpose
CrystalCleardata collection
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: 2010-03-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2021-10-13
    Changes: Database references, Derived calculations
  • Version 1.3: 2023-09-06
    Changes: Data collection, Refinement description