3N1F

Crystal Structure of IhhN bound to CDOFn3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.153 
  • R-Value Observed: 0.155 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

All mammalian Hedgehog proteins interact with cell adhesion molecule, down-regulated by oncogenes (CDO) and brother of CDO (BOC) in a conserved manner.

Kavran, J.M.Ward, M.D.Oladosu, O.O.Mulepati, S.Leahy, D.J.

(2010) J Biol Chem 285: 24584-24590

  • DOI: 10.1074/jbc.M110.131680
  • Primary Citation of Related Structures:  
    3N1O, 3N1P, 3N1Q, 3N1F, 3N1G, 3N1M

  • PubMed Abstract: 
  • Hedgehog (Hh) signaling proteins stimulate cell proliferation, differentiation, and tissue patterning at multiple points in animal development. A single Hh homolog is present in Drosophila, but three Hh homologs, Sonic Hh, Indian Hh, and Desert Hh, are present in mammals ...

    Hedgehog (Hh) signaling proteins stimulate cell proliferation, differentiation, and tissue patterning at multiple points in animal development. A single Hh homolog is present in Drosophila, but three Hh homologs, Sonic Hh, Indian Hh, and Desert Hh, are present in mammals. Distribution, movement, and reception of Hh signals are tightly regulated, and abnormal Hh signaling is associated with developmental defects and cancer. In addition to the integral membrane proteins Patched and Smoothened, members of the Drosophila Ihog family of adhesion-like molecules have recently been shown to bind Hh proteins with micromolar affinity and positively regulate Hh signaling. Cell adhesion molecule-related, down-regulated by oncogenes (CDO) and Brother of CDO (BOC) are the closest mammalian relatives of Drosophila Ihog, and CDO binds Sonic Hh with micromolar affinity and positively regulates Hh signaling. Despite these similarities, structural and biochemical studies have shown that Ihog and CDO utilize nonorthologous domains and completely different binding modes to interact with cognate Hh proteins. We report here biochemical and x-ray structural studies of Sonic, Indian, and Desert Hh proteins both alone and complexed with active domains of CDO and BOC. These results show that all mammalian Hh proteins bind CDO and BOC in the same manner. We also show that interactions between Hh proteins and CDO are weakened at low pH. Formation of Hh-mediated Hh oligomers is thought to be an important feature of normal Hh signaling, but no conserved self-interaction between Hh proteins is apparent from inspection of 14 independent Hh-containing crystal lattices.


    Organizational Affiliation

    Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Indian hedgehog proteinA, B169Homo sapiensMutation(s): 0 
Gene Names: IHH
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q14623 (Homo sapiens)
Explore Q14623 
Go to UniProtKB:  Q14623
PHAROS:  Q14623
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Cell adhesion molecule-related/down-regulated by oncogenesC, D102Homo sapiensMutation(s): 0 
Gene Names: CDONCDO
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q4KMG0 (Homo sapiens)
Explore Q4KMG0 
Go to UniProtKB:  Q4KMG0
PHAROS:  Q4KMG0
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.153 
  • R-Value Observed: 0.155 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.758α = 90
b = 98.198β = 90
c = 144.105γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
PHENIXrefinement
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: 2010-06-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2013-06-19
    Changes: Database references