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- PDB-8yoy: Structure of HKU1A RBD with TMPRSS2 -

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Basic information

Entry
Database: PDB / ID: 8yoy
TitleStructure of HKU1A RBD with TMPRSS2
Components
  • Spike protein S1
  • Transmembrane protease serine 2
KeywordsVIRAL PROTEIN/HYDROLASE / HKU1A / RBD / TMPRSS2 / VIRAL PROTEIN-HYDROLASE complex
Function / homology
Function and homology information


transmembrane protease serine 2 / protein autoprocessing / Attachment and Entry / serine-type peptidase activity / viral translation / Induction of Cell-Cell Fusion / entry receptor-mediated virion attachment to host cell / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of viral entry into host cell ...transmembrane protease serine 2 / protein autoprocessing / Attachment and Entry / serine-type peptidase activity / viral translation / Induction of Cell-Cell Fusion / entry receptor-mediated virion attachment to host cell / Attachment and Entry / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / endocytosis involved in viral entry into host cell / fusion of virus membrane with host plasma membrane / serine-type endopeptidase activity / fusion of virus membrane with host endosome membrane / viral envelope / host cell plasma membrane / virion membrane / proteolysis / extracellular exosome / extracellular region / nucleoplasm / membrane / plasma membrane
Similarity search - Function
Scavenger receptor cysteine-rich domain / SRCR domain profile. / SRCR-like domain superfamily / Scavenger receptor Cys-rich / SRCR domain / Spike (S) protein S1 subunit, N-terminal domain, murine hepatitis virus-like / Low-density lipoprotein (LDL) receptor class A, conserved site / LDL-receptor class A (LDLRA) domain signature. / LDL-receptor class A (LDLRA) domain profile. / Spike glycoprotein S2, coronavirus, C-terminal ...Scavenger receptor cysteine-rich domain / SRCR domain profile. / SRCR-like domain superfamily / Scavenger receptor Cys-rich / SRCR domain / Spike (S) protein S1 subunit, N-terminal domain, murine hepatitis virus-like / Low-density lipoprotein (LDL) receptor class A, conserved site / LDL-receptor class A (LDLRA) domain signature. / LDL-receptor class A (LDLRA) domain profile. / Spike glycoprotein S2, coronavirus, C-terminal / Coronavirus spike glycoprotein S2, intravirion / 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 / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein, N-terminal domain superfamily / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein, betacoronavirus / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Betacoronavirus spike glycoprotein S1, receptor binding / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / Spike glycoprotein S2 superfamily, coronavirus / Spike glycoprotein S2, coronavirus, heptad repeat 1 / Spike glycoprotein S2, coronavirus, heptad repeat 2 / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 1 (HR1) region profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 2 (HR2) region profile. / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2 / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan
Similarity search - Domain/homology
Transmembrane protease serine 2 / Spike glycoprotein
Similarity search - Component
Biological speciesCandidatus Accumulibacter adiacens (bacteria)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.21 Å
AuthorsGao, X. / Cui, S. / Ding, W. / Shang, K. / Zhu, H. / Zhu, K.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Cell Discov / Year: 2024
Title: Structural basis for the interaction between human coronavirus HKU1 spike receptor binding domain and its receptor TMPRSS2.
Authors: Xiaopan Gao / Kaixiang Zhu / Lin Wang / Kun Shang / Lei Hua / Bo Qin / Hongtao Zhu / Wei Ding / Sheng Cui /
History
DepositionMar 14, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Aug 28, 2024Provider: repository / Type: Initial release
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Revision 1.1Oct 16, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification
Revision 1.2Jul 16, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
Revision 1.1Jul 16, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Spike protein S1
B: Transmembrane protease serine 2


Theoretical massNumber of molelcules
Total (without water)83,8072
Polymers83,8072
Non-polymers00
Water00
1


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

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Components

#1: Protein Spike protein S1


Mass: 41425.062 Da / Num. of mol.: 1 / Fragment: RBD domain
Source method: isolated from a genetically manipulated source
Details: Sequence reference for Candidatus Accumulibacter adiacens (2954378) is not available in UniProt at the time of biocuration. Current sequence reference is from UniProt ID Q5MQD0.
Source: (gene. exp.) Candidatus Accumulibacter adiacens (bacteria)
Gene: S, 3 / Production host: Baculovirus expression vector pFastBac1-HM / References: UniProt: Q5MQD0
#2: Protein Transmembrane protease serine 2 / Serine protease 10


Mass: 42381.848 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: TMPRSS2, PRSS10 / Production host: Baculovirus expression vector pFastBac1-HM
References: UniProt: O15393, transmembrane protease serine 2
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: HKU1A-RBD with TMPRSS2 receptor / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Baculovirus expression vector pFastBac1-HM
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid type: Quantifoil R1.2/1.3
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1800 nm / Calibrated defocus max: 2500 nm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 55 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.21 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 423131 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0035216
ELECTRON MICROSCOPYf_angle_d0.4777094
ELECTRON MICROSCOPYf_dihedral_angle_d4.082704
ELECTRON MICROSCOPYf_chiral_restr0.043755
ELECTRON MICROSCOPYf_plane_restr0.004923

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