8SNM

Structure of mature human ADAM17/iRhom2 sheddase complex in complex with ADAM17 prodomain


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.84 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Cryo-EM reveals that iRhom2 restrains ADAM17 protease activity to control the release of growth factor and inflammatory signals.

Lu, F.Zhao, H.Dai, Y.Wang, Y.Lee, C.H.Freeman, M.

(2024) Mol Cell 84: 2152-2165.e5

  • DOI: https://doi.org/10.1016/j.molcel.2024.04.025
  • Primary Citation of Related Structures:  
    8SNL, 8SNM, 8SNN, 8SNO

  • PubMed Abstract: 

    A disintegrin and metalloprotease 17 (ADAM17) is a membrane-tethered protease that triggers multiple signaling pathways. It releases active forms of the primary inflammatory cytokine tumor necrosis factor (TNF) and cancer-implicated epidermal growth factor (EGF) family growth factors. iRhom2, a rhomboid-like, membrane-embedded pseudoprotease, is an essential cofactor of ADAM17. Here, we present cryoelectron microscopy (cryo-EM) structures of the human ADAM17/iRhom2 complex in both inactive and active states. These reveal three regulatory mechanisms. First, exploiting the rhomboid-like hallmark of TMD recognition, iRhom2 interacts with the ADAM17 TMD to promote ADAM17 trafficking and enzyme maturation. Second, a unique iRhom2 extracellular domain unexpectedly retains the cleaved ADAM17 inhibitory prodomain, safeguarding against premature activation and dysregulated proteolysis. Finally, loss of the prodomain from the complex mobilizes the ADAM17 protease domain, contributing to its ability to engage substrates. Our results reveal how a rhomboid-like pseudoprotease has been repurposed during evolution to regulate a potent membrane-tethered enzyme, ADAM17, ensuring the fidelity of inflammatory and growth factor signaling.


  • Organizational Affiliation

    Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Inactive rhomboid protein 2A [auth C]827Homo sapiensMutation(s): 0 
Gene Names: RHBDF2IRHOM2RHBDL5RHBDL6
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q6PJF5 (Homo sapiens)
Explore Q6PJF5 
Go to UniProtKB:  Q6PJF5
PHAROS:  Q6PJF5
GTEx:  ENSG00000129667 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6PJF5
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Disintegrin and metalloproteinase domain-containing protein 17 propeptideB [auth A]214Homo sapiensMutation(s): 0 
Gene Names: ADAM17CSVPTACE
EC: 3.4.24.86
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P78536 (Homo sapiens)
Explore P78536 
Go to UniProtKB:  P78536
PHAROS:  P78536
GTEx:  ENSG00000151694 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP78536
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Disintegrin and metalloproteinase domain-containing protein 17C [auth B]610Homo sapiensMutation(s): 0 
Gene Names: ADAM17CSVPTACE
EC: 3.4.24.86
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P78536 (Homo sapiens)
Explore P78536 
Go to UniProtKB:  P78536
PHAROS:  P78536
GTEx:  ENSG00000151694 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP78536
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.84 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.18.2_3874:

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM143282

Revision History  (Full details and data files)

  • Version 1.0: 2024-05-29
    Type: Initial release
  • Version 1.1: 2024-11-20
    Changes: Data collection, Structure summary
  • Version 1.2: 2024-12-11
    Changes: Data collection, Database references