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- PDB-9o58: Zymogen ADAM17-iRhom2 complex bound by the MEDI3622 Fab -

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Basic information

Entry
Database: PDB / ID: 9o58
TitleZymogen ADAM17-iRhom2 complex bound by the MEDI3622 Fab
Components
  • (MEDI3622 Fab ...) x 2
  • Disintegrin and metalloproteinase domain-containing protein 17
  • GFP-iRhom2 fusion protein
KeywordsIMMUNE SYSTEM / Inhibitor / Complex / Sheddase
Function / homology
Function and homology information


regulation of epidermal growth factor receptor signaling pathway / protein transporter activity / CD163 mediating an anti-inflammatory response / growth factor binding / regulation of protein secretion / negative regulation of protein secretion / bioluminescence / protein localization to plasma membrane / generation of precursor metabolites and energy / negative regulation of inflammatory response to antigenic stimulus ...regulation of epidermal growth factor receptor signaling pathway / protein transporter activity / CD163 mediating an anti-inflammatory response / growth factor binding / regulation of protein secretion / negative regulation of protein secretion / bioluminescence / protein localization to plasma membrane / generation of precursor metabolites and energy / negative regulation of inflammatory response to antigenic stimulus / Golgi lumen / protein transport / endoplasmic reticulum membrane / plasma membrane
Similarity search - Function
Rhomboid serine protease / : / Inactive rhomboid proteins 1/2, N-terminal / Domain of unknown function DUF3850 / Domain of unknown function (DUF3850) / ASCH / Peptidase S54, rhomboid domain / Rhomboid domain / ASCH domain / Rhomboid-like superfamily ...Rhomboid serine protease / : / Inactive rhomboid proteins 1/2, N-terminal / Domain of unknown function DUF3850 / Domain of unknown function (DUF3850) / ASCH / Peptidase S54, rhomboid domain / Rhomboid domain / ASCH domain / Rhomboid-like superfamily / PUA-like superfamily / Green fluorescent protein, GFP / Green fluorescent protein-related / Green fluorescent protein / Green fluorescent protein
Similarity search - Domain/homology
Green fluorescent protein / DUF3850 domain-containing protein / Inactive rhomboid protein 2
Similarity search - Component
Biological speciesHomo sapiens (human)
Aequorea victoria (jellyfish)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.53 Å
AuthorsSlone, C.E. / Maciag, J.J.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35GM146830 United States
CitationJournal: Proc Natl Acad Sci U S A / Year: 2025
Title: Structural insights into the activation and inhibition of the ADAM17-iRhom2 complex.
Authors: Joseph J Maciag / Conner E Slone / Hala F Alnajjar / Maria F Rich / Bryce Guion / Igal Ifergan / Carl P Blobel / Tom C M Seegar /
Abstract: The endopeptidase activity of ADAM (a disintegrin and metalloproteinase)-17, the primary processor of several EGFR ligands and tumor necrosis factor-alpha (TNF-α), is essential for proper embryonic ...The endopeptidase activity of ADAM (a disintegrin and metalloproteinase)-17, the primary processor of several EGFR ligands and tumor necrosis factor-alpha (TNF-α), is essential for proper embryonic development and immune regulation. Dysregulated ADAM17 activity is prevalent in a wide array of human diseases, including cancer, chronic inflammation, and SARS-CoV-2 viral progression. Initially translated as an inactive zymogen, ADAM17 maturation and enzymatic function are tightly regulated by its obligate binding partners, the inactive rhomboid proteins (iRhom) -1 and -2. Here, we present the cryo-EM structure of the ADAM17 zymogen bound to iRhom2. Our findings elucidate the interactions within the ADAM17-iRhom2 complex, the inhibitory mechanisms of the therapeutic MEDI3622 antibody and ADAM17 prodomain, and the previously unknown role of a membrane-proximal cytoplasmic reentry loop of iRhom2 involved in the mechanism of activation. Importantly, we perform cellular assays to validate our structural findings and provide further insights into the functional implications of these interactions, paving the way for developing therapeutic strategies targeting this biomedically critical enzyme complex.
History
DepositionApr 9, 2025Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 25, 2025Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Disintegrin and metalloproteinase domain-containing protein 17
B: GFP-iRhom2 fusion protein
C: MEDI3622 Fab Light Chain
D: MEDI3622 Fab Heavy Chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)224,23113
Polymers222,3734
Non-polymers1,8579
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 2 types, 2 molecules AB

#1: Protein Disintegrin and metalloproteinase domain-containing protein 17 / ADAM 17 / Snake venom-like protease / TNF-alpha convertase / TNF-alpha-converting enzyme


Mass: 91328.742 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ADAM17, CSVP, TACE / Production host: Homo sapiens (human) / References: UniProt: P78536, EC: 3.4.24.86
#2: Protein GFP-iRhom2 fusion protein / iRhom2 / Rhomboid 5 homolog 2 / Rhomboid family member 2 / Rhomboid veinlet-like protein 5 / ...iRhom2 / Rhomboid 5 homolog 2 / Rhomboid family member 2 / Rhomboid veinlet-like protein 5 / Rhomboid veinlet-like protein 6


Mass: 84277.539 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Aequorea victoria (jellyfish), (gene. exp.) Homo sapiens (human)
Gene: GFP, RHBDF2, IRHOM2, RHBDL5, RHBDL6 / Production host: Homo sapiens (human) / References: UniProt: P42212, UniProt: Q6PJF5

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Antibody , 2 types, 2 molecules CD

#3: Antibody MEDI3622 Fab Light Chain


Mass: 23324.887 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#4: Antibody MEDI3622 Fab Heavy Chain


Mass: 23442.270 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)

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Sugars , 2 types, 7 molecules

#5: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#6: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C8H15NO6 / Feature type: SUBJECT OF INVESTIGATION
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Non-polymers , 2 types, 2 molecules

#7: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca / Feature type: SUBJECT OF INVESTIGATION
#8: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Zymogen ADA17-iRhom2 complex bound by the MEDI3622 Fab
Type: COMPLEX / Entity ID: #2-#4 / Source: RECOMBINANT
Molecular weightValue: 0.23 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
SpecimenConc.: 5.3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: SPOT SCAN
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2200 nm / Nominal defocus min: 400 nm
Image recordingElectron dose: 58.3 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.20.1_4487 / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.53 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 46753 / Symmetry type: POINT
RefinementHighest resolution: 3.53 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00412711
ELECTRON MICROSCOPYf_angle_d0.6517232
ELECTRON MICROSCOPYf_dihedral_angle_d4.4561738
ELECTRON MICROSCOPYf_chiral_restr0.0461919
ELECTRON MICROSCOPYf_plane_restr0.0042206

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