6E1H

Structure of 2:1 human Ptch1-Shh-N complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history

Re-refinement Note

A newer entry is available that reflects an alternative modeling of the original data: 6RVD


Literature

Two Patched molecules engage distinct sites on Hedgehog yielding a signaling-competent complex.

Qi, X.Schmiege, P.Coutavas, E.Li, X.

(2018) Science 362

  • DOI: https://doi.org/10.1126/science.aas8843
  • Primary Citation of Related Structures:  
    6E1H

  • PubMed Abstract: 

    Aberrant Hedgehog (HH) signaling leads to various types of cancer and birth defects. N-terminally palmitoylated HH initiates signaling by binding its receptor Patched-1 (PTCH1). A recent 1:1 PTCH1-HH complex structure visualized a palmitate-mediated binding site on HH, which was inconsistent with previous studies that implied a distinct, calcium-mediated binding site for PTCH1 and HH co-receptors. Our 3.5-angstrom resolution cryo-electron microscopy structure of native Sonic Hedgehog (SHH-N) in complex with PTCH1 at a physiological calcium concentration reconciles these disparate findings and demonstrates that one SHH-N molecule engages both epitopes to bind two PTCH1 receptors in an asymmetric manner. Functional assays using PTCH1 or SHH-N mutants that disrupt the individual interfaces illustrate that simultaneous engagement of both interfaces is required for efficient signaling in cells.


  • Organizational Affiliation

    Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein patched homolog 1A,
C [auth B]
1,447Homo sapiensMutation(s): 0 
Gene Names: PTCH1PTCH
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q13635 (Homo sapiens)
Explore Q13635 
Go to UniProtKB:  Q13635
PHAROS:  Q13635
GTEx:  ENSG00000185920 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13635
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Sonic hedgehog proteinB [auth C]174Homo sapiensMutation(s): 0 
Gene Names: SHH
Membrane Entity: Yes 
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
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Released Date: 2018-08-29 
  • Deposition Author(s): Qi, X., Li, X.

Revision History  (Full details and data files)

  • Version 1.0: 2018-08-29
    Type: Initial release
  • Version 1.1: 2018-09-05
    Changes: Data collection, Database references
  • Version 1.2: 2018-10-17
    Changes: Data collection, Database references
  • Version 1.3: 2019-12-18
    Changes: Other
  • Version 2.0: 2023-02-22
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Polymer sequence, Source and taxonomy, Structure summary