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- PDB-9opr: TMPRSS2 S441A in complex with the H1H7 Fab and anti-kappa light c... -

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Basic information

Entry
Database: PDB / ID: 9opr
TitleTMPRSS2 S441A in complex with the H1H7 Fab and anti-kappa light chain nanobody
Components
  • (H1H7 antibody ...) x 2
  • Transmembrane protease serine 2
  • anti-kappa light chain nanobody
KeywordsHYDROLASE/IMMUNE SYSTEM / H1H7 / nanobody / antibody / TMPRSS2 / NL63 / HKU1 / RBD / S2prime / coronavirus / cleavage / SARS-CoV-2 / spike / fusion / protease / entry / antiviral / Structural Genomics / Seattle Structural Genomics Center for Infectious Disease / SSGCID / HYDROLASE-IMMUNE SYSTEM complex
Function / homology
Function and homology information


transmembrane protease serine 2 / SUMO is conjugated to E1 (UBA2:SAE1) / SUMOylation of nuclear envelope proteins / SUMO is transferred from E1 to E2 (UBE2I, UBC9) / SUMO is proteolytically processed / SUMOylation of transcription factors / Postmitotic nuclear pore complex (NPC) reformation / SUMOylation of transcription cofactors / septin ring / SUMOylation of DNA damage response and repair proteins ...transmembrane protease serine 2 / SUMO is conjugated to E1 (UBA2:SAE1) / SUMOylation of nuclear envelope proteins / SUMO is transferred from E1 to E2 (UBE2I, UBC9) / SUMO is proteolytically processed / SUMOylation of transcription factors / Postmitotic nuclear pore complex (NPC) reformation / SUMOylation of transcription cofactors / septin ring / SUMOylation of DNA damage response and repair proteins / Transcriptional and post-translational regulation of MITF-M expression and activity / SUMOylation of DNA replication proteins / SUMOylation of SUMOylation proteins / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / SUMOylation of RNA binding proteins / SUMOylation of chromatin organization proteins / protein autoprocessing / ubiquitin-like protein ligase binding / protein sumoylation / Attachment and Entry / serine-type peptidase activity / condensed nuclear chromosome / protein tag activity / Induction of Cell-Cell Fusion / positive regulation of viral entry into host cell / Attachment and Entry / entry receptor-mediated virion attachment to host cell / serine-type endopeptidase activity / proteolysis / extracellular exosome / extracellular region / nucleoplasm / identical protein binding / nucleus / plasma membrane
Similarity search - Function
Scavenger receptor cysteine-rich domain / SRCR domain profile. / SRCR-like domain superfamily / Scavenger receptor Cys-rich / SRCR domain / Rad60/SUMO-like domain / Ubiquitin-2 like Rad60 SUMO-like / Low-density lipoprotein (LDL) receptor class A, conserved site / LDL-receptor class A (LDLRA) domain signature. / LDL-receptor class A (LDLRA) domain profile. ...Scavenger receptor cysteine-rich domain / SRCR domain profile. / SRCR-like domain superfamily / Scavenger receptor Cys-rich / SRCR domain / Rad60/SUMO-like domain / Ubiquitin-2 like Rad60 SUMO-like / Low-density lipoprotein (LDL) receptor class A, conserved site / LDL-receptor class A (LDLRA) domain signature. / LDL-receptor class A (LDLRA) domain profile. / Low-density lipoprotein receptor domain class A / Low-density lipoprotein (LDL) receptor class A repeat / LDL receptor-like superfamily / Serine proteases, trypsin family, histidine active site / Serine proteases, trypsin family, serine active site / Serine proteases, trypsin family, histidine active site. / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin family, serine active site. / Serine proteases, trypsin domain profile. / Trypsin-like serine protease / Serine proteases, trypsin domain / Trypsin / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Ubiquitin-like domain superfamily / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan
Similarity search - Domain/homology
Transmembrane protease serine 2 / Small ubiquitin-related modifier
Similarity search - Component
Biological speciesHomo sapiens (human)
Lama glama (llama)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsMcCallum, M. / Seattle Structural Genomics Center for Infectious Disease (SSGCID) / Veesler, D.
Funding support United States, 1items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: Nat Struct Mol Biol / Year: 2026
Title: TMPRSS2-mediated coronavirus spike activation and inhibition.
Authors: Matthew McCallum / James Brett Case / Jack T Brown / Young-Jun Park / Jimin Lee / Emmajay Sutherland / Anupriya Aggarwal / Cecily Gibson / Florian A Lempp / Cameron Stewart / M Alejandra ...Authors: Matthew McCallum / James Brett Case / Jack T Brown / Young-Jun Park / Jimin Lee / Emmajay Sutherland / Anupriya Aggarwal / Cecily Gibson / Florian A Lempp / Cameron Stewart / M Alejandra Tortorici / Shilpa Sanapala / Jun Siong Low / Daniel Asarnow / Dana Bohan / Exequiel Dellota / Benjamin Merz / Bhavna Chawla / Swagata Kar / Antonio Lanzavecchia / Federica Sallusto / Nicholas M Riley / Stuart Turville / Lisa Purcell / Michael S Diamond / David Veesler /
Abstract: The protease TMPRSS2 facilitates coronavirus infections, yet its mechanism of viral glycoprotein recognition remains unclear. Here we show that, following ACE2 engagement of the SARS-CoV-2 spike (S) ...The protease TMPRSS2 facilitates coronavirus infections, yet its mechanism of viral glycoprotein recognition remains unclear. Here we show that, following ACE2 engagement of the SARS-CoV-2 spike (S) inducing the early fusion intermediate conformation (E-FIC), TMPRSS2 cleaves the R815 S' site and promotes fusogenic conformational changes leading to viral entry. We unveil TMPRSS2 recognition of S', identify key residues modulating binding specificity and demonstrate that S' site-directed broadly neutralizing antibodies target E-FIC and inhibit viral entry by blocking TMPRSS2 access. We computationally designed stabilized E-FIC as a vaccine candidate, overcoming the transient nature of this state. We describe a TMPRSS2-directed monoclonal antibody inhibiting several coronaviruses, including SARS-CoV-2 variants and protecting mice against SARS-CoV-2 challenge. These results outline the mechanistic role of TMPRSS2 and S' site-directed antibodies in coronavirus entry.
History
DepositionMay 19, 2025Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 13, 2026Provider: repository / Type: Initial release
Revision 1.0May 13, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0May 13, 2026Data content type: Additional map / Part number: 1 / Data content type: Additional map / Provider: repository / Type: Initial release
Revision 1.0May 13, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0May 13, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0May 13, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0May 13, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Transmembrane protease serine 2
H: H1H7 antibody heavy chain
L: H1H7 antibody light chain
N: anti-kappa light chain nanobody
hetero molecules


Theoretical massNumber of molelcules
Total (without water)124,1195
Polymers123,6944
Non-polymers4241
Water68538
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Antibody , 3 types, 3 molecules HLN

#2: Antibody H1H7 antibody heavy chain


Mass: 23720.721 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#3: Antibody H1H7 antibody light chain


Mass: 23291.832 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 anti-kappa light chain nanobody


Mass: 17252.107 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Lama glama (llama) / Production host: Escherichia coli (E. coli)

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Protein / Sugars / Non-polymers , 3 types, 40 molecules A

#1: Protein Transmembrane protease serine 2 / Serine protease 10


Mass: 59429.633 Da / Num. of mol.: 1 / Mutation: S441A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SMT3, YDR510W, D9719.15, TMPRSS2, PRSS10 / Production host: Homo sapiens (human)
References: UniProt: Q12306, UniProt: O15393, transmembrane protease serine 2
#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-ROHGlycam 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
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 38 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestN
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: TMPRSS2 S441A in complex with the H1H7 Fab and anti-kappa light chain nanobody
Type: COMPLEX / Entity ID: #1-#4 / Source: MULTIPLE SOURCES
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding 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: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2700 nm / Nominal defocus min: 200 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameCategory
1cryoSPARCparticle selection
13cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 117441 / Symmetry type: POINT
RefinementHighest resolution: 3.2 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0036650
ELECTRON MICROSCOPYf_angle_d0.5319091
ELECTRON MICROSCOPYf_dihedral_angle_d4.191956
ELECTRON MICROSCOPYf_chiral_restr0.0451007
ELECTRON MICROSCOPYf_plane_restr0.0041176

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