Biological Assembly 1  

 3D View: Structure | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 192.01 kDa 
• Atom Count: 7914 
• Residue Count: 982 
• Unique protein chains: 2

6TD6

Structure of Drosophila melanogaster Dispatched bound to a modified Hedgehog ligand, HhN-C85II

• DOI: 10.2210/pdb6TD6/pdb
• EMDataResource: EMD-10464

• Classification: MEMBRANE PROTEIN
• Organism(s): Drosophila melanogaster
• Expression System: Homo sapiens, Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2019-11-07 Released: 2020-06-03 
• Deposition Author(s): Korkhov, V.M., Cannac, F.
• Funding Organization(s): Swiss National Science Foundation

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 4.76 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structure of the Hedgehog release protein Dispatched.

Cannac, F., Qi, C., Falschlunger, J., Hausmann, G., Basler, K., Korkhov, V.M.

(2020) Sci Adv 6: eaay7928-eaay7928

• PubMed: 32494603 
• DOI: 10.1126/sciadv.aay7928
• Primary Citation of Related Structures:  
  6TBU, 6TD6


• PubMed Abstract: 
  

The Hedgehog (Hh) signaling pathway controls embryonic development and adult tissue homeostasis in multicellular organisms. In Drosophila melanogaster , the pathway is primed by secretion of a dually lipid-modified morphogen, Hh, a process dependent on a membrane-integral protein Dispatched. Although Dispatched is a critical component of the pathway, the structural basis of its activity has, so far, not been described. Here, we describe a cryo-electron microscopy structure of the D. melanogaster Dispatched at 3.2-Å resolution. The ectodomains of Dispatched adopt an open conformation suggestive of a receptor-chaperone role. A three-dimensional reconstruction of Dispatched bound to Hh confirms the ability of Dispatched to bind Hh but using a unique mode distinct from those previously observed in structures of Hh complexes. The structure may represent the state of the complex that precedes shedding of Hh from the surface of the morphogen-releasing cell.

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Organizational Affiliation: 

Institute of Biochemistry, ETH-Zürich, 8093 Zürich, Switzerland.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein dispatched	A	1218	Drosophila melanogaster	Mutation(s): 0  Gene Names: disp, CG2019
Find proteins for Q9VNJ5 (Drosophila melanogaster) Explore Q9VNJ5  Go to UniProtKB:  Q9VNJ5

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein hedgehog	B	471	Drosophila melanogaster	Mutation(s): 0  Gene Names: hh, CG4637
Find proteins for Q02936 (Drosophila melanogaster) Explore Q02936  Go to UniProtKB:  Q02936

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	C	2		N-Glycosylation

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	A	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 4.76 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2019-11-07 
• Released Date: 2020-06-03 
Deposition Author(s): Korkhov, V.M., Cannac, F.

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Funding Organization	Location	Grant Number
Swiss National Science Foundation	Switzerland	150665 & 176992

Revision History 

• Version 1.0: 2020-06-03
  Type: Initial release
  
• Version 1.1: 2020-06-17
  Changes: Database references
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary