7E2I

Cryo-EM structure of hDisp1NNN-ShhN


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.07 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


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Literature

Structural insights into proteolytic activation of the human Dispatched1 transporter for Hedgehog morphogen release.

Li, W.Wang, L.Wierbowski, B.M.Lu, M.Dong, F.Liu, W.Li, S.Wang, P.Salic, A.Gong, X.

(2021) Nat Commun 12: 6966-6966

  • DOI: 10.1038/s41467-021-27257-w
  • Primary Citation of Related Structures:  
    7E2G, 7E2H, 7E2I

  • PubMed Abstract: 
  • The membrane protein Dispatched (Disp), which belongs to the RND family of small molecule transporters, is essential for Hedgehog (Hh) signaling, by catalyzing the extracellular release of palmitate- and cholesterol-modified Hh ligands from producing cells ...

    The membrane protein Dispatched (Disp), which belongs to the RND family of small molecule transporters, is essential for Hedgehog (Hh) signaling, by catalyzing the extracellular release of palmitate- and cholesterol-modified Hh ligands from producing cells. Disp function requires Furin-mediated proteolytic cleavage of its extracellular domain, but how this activates Disp remains obscure. Here, we employ cryo-electron microscopy to determine atomic structures of human Disp1 (hDisp1), before and after cleavage, and in complex with lipid-modified Sonic hedgehog (Shh) ligand. These structures, together with biochemical data, reveal that proteolytic cleavage opens the extracellular domain of hDisp1, removing steric hindrance to Shh binding. Structure-guided functional experiments demonstrate the role of hDisp1-Shh interactions in ligand release. Our results clarify the mechanisms of hDisp1 activation and Shh morphogen release, and highlight how a unique proteolytic cleavage event enabled acquisition of a protein substrate by a member of a family of small molecule transporters.


    Organizational Affiliation

    Department of Biology, School of Life Sciences, Southern University of Science and Technology, 518055, Shenzhen, Guangdong, China. gongx@sustech.edu.cn.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Sonic hedgehog proteinA [auth G]462Homo sapiensMutation(s): 0 
Gene Names: SHH
EC: 3.1
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q15465 (Homo sapiens)
Explore Q15465 
Go to UniProtKB:  Q15465
PHAROS:  Q15465
Entity Groups  
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UniProt GroupQ15465
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein dispatched homolog 1B [auth D]1,524Homo sapiensMutation(s): 3 
Gene Names: DISP1DISPA
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q96F81 (Homo sapiens)
Explore Q96F81 
Go to UniProtKB:  Q96F81
PHAROS:  Q96F81
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96F81
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.07 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other governmentChina--
Other governmentChina--

Revision History  (Full details and data files)

  • Version 1.0: 2021-12-08
    Type: Initial release