6XE6

Structure of Human Dispatched-1 (DISP1)

• PDB DOI: https://doi.org/10.2210/pdb6XE6/pdb
• EM Map EMD-22144: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  OPMPDBTMMemProtMDmpstruc


• Deposited: 2020-06-12 Released: 2020-07-08 
• Deposition Author(s): Chen, H., Liu, Y., Li, X.
• Funding Organization(s): National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 4.53 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structure of human Dispatched-1 provides insights into Hedgehog ligand biogenesis.

Chen, H., Liu, Y., Li, X.

(2020) Life Sci Alliance 3

• PubMed: 32646883 
• DOI: https://doi.org/10.26508/lsa.202000776
• Primary Citation of Related Structures:  
  6XE6


• PubMed Abstract: 
  

  Hedgehog (HH) signaling is essential for metazoan development. The HH ligand is secreted into the extracellular space by a cell surface protein named Dispatched-1 (DISP1). Here, we report the cryo-EM structure of human DISP1 protein. DISP1 contains 12 transmembrane helices (TMs) and two extracellular domains (ECDs). Its ECDs reveal an open state, in contrast to its structural homologues PTCH1 and NPC1, whose extracellular/luminal domains adopt a closed state. The low-resolution structure of the DISP1 complex with dual lipid-modified HH ligand reveals how the ECDs of DISP1 engage with HH ligand. Moreover, several cholesterol-like molecules are found in the TMs, implying a transport-like function of DISP1.

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Organizational Affiliation: 

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

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 127.15 kDa 
• Atom Count: 6,530 
• Modelled Residue Count: 826 
• Deposited Residue Count: 1,096 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein dispatched homolog 1	A	1,096	Homo sapiens	Mutation(s): 0  Gene Names: DISP1, DISPA Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for Q96F81 (Homo sapiens) Explore Q96F81  Go to UniProtKB:  Q96F81
PHAROS:  Q96F81 GTEx:  ENSG00000154309

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
Y01	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A]	CHOLESTEROL HEMISUCCINATE C31 H50 O4 WLNARFZDISHUGS-MIXBDBMTSA-N
NAG	G [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 4.53 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2020-07-08 
Deposition Author(s): Chen, H., Liu, Y., Li, X.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)	United States	P01 HL020948
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R01 GM135343

Revision History  

• Version 1.0: 2020-07-08
  Type: Initial release
  
• Version 1.1: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Structure summary
• Version 1.2: 2021-01-20
  Changes: Database references, Structure summary