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- PDB-8y89: Structure of HCoV-HKU1C spike in the functionally anchored-3up co... -

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Basic information

Entry
Database: PDB / ID: 8y89
TitleStructure of HCoV-HKU1C spike in the functionally anchored-3up conformation with 2TMPRSS2
Components
  • Spike glycoprotein
  • Transmembrane protease serine 2
KeywordsVIRAL PROTEIN / HKU1C / spike / TMPRSS2
Function / homology
Function and homology information


transmembrane protease serine 2 / protein autoprocessing / Attachment and Entry / serine-type peptidase activity / endocytosis involved in viral entry into host cell / viral translation / Induction of Cell-Cell Fusion / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / Attachment and Entry / positive regulation of viral entry into host cell ...transmembrane protease serine 2 / protein autoprocessing / Attachment and Entry / serine-type peptidase activity / endocytosis involved in viral entry into host cell / viral translation / Induction of Cell-Cell Fusion / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / Attachment and Entry / positive regulation of viral entry into host cell / receptor-mediated virion attachment to 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 / identical protein binding / membrane / plasma membrane
Similarity search - Function
Spike (S) protein S1 subunit, receptor-binding domain, HKU1-like / Scavenger receptor cysteine-rich domain / SRCR domain / SRCR domain profile. / SRCR-like domain / SRCR-like domain superfamily / Scavenger receptor Cys-rich / 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. ...Spike (S) protein S1 subunit, receptor-binding domain, HKU1-like / Scavenger receptor cysteine-rich domain / SRCR domain / SRCR domain profile. / SRCR-like domain / SRCR-like domain superfamily / Scavenger receptor Cys-rich / 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 / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin family, histidine active site. / Serine proteases, trypsin domain profile. / Serine proteases, trypsin family, serine active site. / Trypsin-like serine protease / Serine proteases, trypsin domain / Trypsin / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / Spike glycoprotein, betacoronavirus / Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus / Spike S1 subunit, receptor binding domain superfamily, 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, coronavirus, heptad repeat 1 / Spike glycoprotein S2, coronavirus, heptad repeat 2 / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 2 (HR2) region profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 1 (HR1) region profile. / Spike glycoprotein S2 superfamily, coronavirus / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2 / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / 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 speciesHuman coronavirus HKU1
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.32 Å
AuthorsLu, Y.C. / Wang, H.F. / Zhang, X. / Liu, X.C. / Sun, L. / Yang, H.T.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)92169109 China
CitationJournal: Cell / Year: 2024
Title: TMPRSS2 and glycan receptors synergistically facilitate coronavirus entry.
Authors: Haofeng Wang / Xiaoce Liu / Xiang Zhang / Zhuoqian Zhao / Yuchi Lu / Dingzhe Pu / Zeyang Zhang / Jie Chen / Yajie Wang / Mengfei Li / Xuxue Dong / Yinkai Duan / Yujia He / Qiyu Mao / ...Authors: Haofeng Wang / Xiaoce Liu / Xiang Zhang / Zhuoqian Zhao / Yuchi Lu / Dingzhe Pu / Zeyang Zhang / Jie Chen / Yajie Wang / Mengfei Li / Xuxue Dong / Yinkai Duan / Yujia He / Qiyu Mao / Hangtian Guo / Haoran Sun / Yihan Zhou / Qi Yang / Yan Gao / Xiuna Yang / Hongzhi Cao / Luke Guddat / Lei Sun / Zihe Rao / Haitao Yang /
Abstract: The entry of coronaviruses is initiated by spike recognition of host cellular receptors, involving proteinaceous and/or glycan receptors. Recently, TMPRSS2 was identified as the proteinaceous ...The entry of coronaviruses is initiated by spike recognition of host cellular receptors, involving proteinaceous and/or glycan receptors. Recently, TMPRSS2 was identified as the proteinaceous receptor for HCoV-HKU1 alongside sialoglycan as a glycan receptor. However, the underlying mechanisms for viral entry remain unknown. Here, we investigated the HCoV-HKU1C spike in the inactive, glycan-activated, and functionally anchored states, revealing that sialoglycan binding induces a conformational change of the NTD and promotes the neighboring RBD of the spike to open for TMPRSS2 recognition, exhibiting a synergistic mechanism for the entry of HCoV-HKU1. The RBD of HCoV-HKU1 features an insertion subdomain that recognizes TMPRSS2 through three previously undiscovered interfaces. Furthermore, structural investigation of HCoV-HKU1A in combination with mutagenesis and binding assays confirms a conserved receptor recognition pattern adopted by HCoV-HKU1. These studies advance our understanding of the complex viral-host interactions during entry, laying the groundwork for developing new therapeutics against coronavirus-associated diseases.
History
DepositionFeb 6, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jul 17, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Spike glycoprotein
C: Spike glycoprotein
B: Spike glycoprotein
T: Transmembrane protease serine 2
G: Transmembrane protease serine 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)513,00129
Polymers505,2955
Non-polymers7,70624
Water00
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

#1: Protein Spike glycoprotein / S glycoprotein / E2 / Peplomer protein


Mass: 140242.453 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human coronavirus HKU1 / Strain: isolate N5 / Gene: S, 3 / Production host: Homo sapiens (human) / References: UniProt: Q0ZME7
#2: Protein Transmembrane protease serine 2 / Serine protease 10


Mass: 42283.629 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: TMPRSS2, PRSS10 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: O15393, transmembrane protease serine 2
#3: 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.: 10 / Source method: obtained synthetically
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
#4: Polysaccharide beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 586.542 Da / Num. of mol.: 1 / Source method: obtained synthetically
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}LINUCSPDB-CARE
#5: 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.: 13 / Source method: obtained synthetically / Formula: C8H15NO6
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
Has ligand of interestN

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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: HKU1C-TMPRSS2 complex / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Human coronavirus HKU1
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: FEI TITAN 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: 1200 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.32 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 116931 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00131375
ELECTRON MICROSCOPYf_angle_d0.37842811
ELECTRON MICROSCOPYf_dihedral_angle_d7.35110913
ELECTRON MICROSCOPYf_chiral_restr0.044968
ELECTRON MICROSCOPYf_plane_restr0.0035477

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