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- PDB-8s9g: SARS-CoV-2 BN.1 spike RBD bound to the human ACE2 ectodomain and ... -

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Basic information

Entry
Database: PDB / ID: 8s9g
TitleSARS-CoV-2 BN.1 spike RBD bound to the human ACE2 ectodomain and the S309 neutralizing antibody Fab fragment
Components
  • Processed angiotensin-converting enzyme 2
  • S309 Fab Heavy chain
  • S309 Fab Light chain
  • Spike glycoproteinSpike protein
KeywordsVIRAL PROTEIN / SARS-CoV-2 / COVID-19 / BN.1 / Spike glycoprotein / Neutralizing antibodies / Structural Genomics / Seattle Structural Genomics Center for Infectious Disease / SSGCID / Inhibitor / ACE2 / VIRAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


positive regulation of amino acid transport / angiotensin-converting enzyme 2 / positive regulation of L-proline import across plasma membrane / Hydrolases; Acting on peptide bonds (peptidases); Metallocarboxypeptidases / angiotensin-mediated drinking behavior / tryptophan transport / positive regulation of gap junction assembly / regulation of systemic arterial blood pressure by renin-angiotensin / regulation of vasoconstriction / regulation of cardiac conduction ...positive regulation of amino acid transport / angiotensin-converting enzyme 2 / positive regulation of L-proline import across plasma membrane / Hydrolases; Acting on peptide bonds (peptidases); Metallocarboxypeptidases / angiotensin-mediated drinking behavior / tryptophan transport / positive regulation of gap junction assembly / regulation of systemic arterial blood pressure by renin-angiotensin / regulation of vasoconstriction / regulation of cardiac conduction / peptidyl-dipeptidase activity / angiotensin maturation / maternal process involved in female pregnancy / Metabolism of Angiotensinogen to Angiotensins / metallocarboxypeptidase activity / Attachment and Entry / negative regulation of signaling receptor activity / carboxypeptidase activity / regulation of cytokine production / positive regulation of cardiac muscle contraction / viral life cycle / blood vessel diameter maintenance / negative regulation of smooth muscle cell proliferation / regulation of transmembrane transporter activity / brush border membrane / cilium / negative regulation of ERK1 and ERK2 cascade / endocytic vesicle membrane / metallopeptidase activity / positive regulation of reactive oxygen species metabolic process / virus receptor activity / regulation of cell population proliferation / regulation of inflammatory response / Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / endopeptidase activity / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / Potential therapeutics for SARS / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / entry receptor-mediated virion attachment to host cell / receptor-mediated endocytosis of virus by host cell / Attachment and Entry / membrane fusion / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / host cell surface receptor binding / symbiont entry into host cell / membrane raft / apical plasma membrane / fusion of virus membrane with host plasma membrane / endoplasmic reticulum lumen / fusion of virus membrane with host endosome membrane / viral envelope / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / cell surface / extracellular space / extracellular exosome / zinc ion binding / extracellular region / membrane / identical protein binding / plasma membrane
Similarity search - Function
Collectrin-like domain profile. / Collectrin domain / Renal amino acid transporter / Peptidase family M2 domain profile. / Peptidase M2, peptidyl-dipeptidase A / Angiotensin-converting enzyme / Neutral zinc metallopeptidases, zinc-binding region signature. / Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. ...Collectrin-like domain profile. / Collectrin domain / Renal amino acid transporter / Peptidase family M2 domain profile. / Peptidase M2, peptidyl-dipeptidase A / Angiotensin-converting enzyme / Neutral zinc metallopeptidases, zinc-binding region signature. / Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / 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
Similarity search - Domain/homology
Spike glycoprotein / Angiotensin-converting enzyme 2
Similarity search - Component
Biological speciesHomo sapiens (human)
Severe acute respiratory syndrome coronavirus
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å
AuthorsPark, Y.J. / Seattle Structural Genomics Center for Infectious Disease (SSGCID) / Veesler, D.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM120553 United States
CitationJournal: Nature / Year: 2023
Title: Neutralization, effector function and immune imprinting of Omicron variants.
Authors: Amin Addetia / Luca Piccoli / James Brett Case / Young-Jun Park / Martina Beltramello / Barbara Guarino / Ha Dang / Guilherme Dias de Melo / Dora Pinto / Kaitlin Sprouse / Suzanne M ...Authors: Amin Addetia / Luca Piccoli / James Brett Case / Young-Jun Park / Martina Beltramello / Barbara Guarino / Ha Dang / Guilherme Dias de Melo / Dora Pinto / Kaitlin Sprouse / Suzanne M Scheaffer / Jessica Bassi / Chiara Silacci-Fregni / Francesco Muoio / Marco Dini / Lucia Vincenzetti / Rima Acosta / Daisy Johnson / Sambhavi Subramanian / Christian Saliba / Martina Giurdanella / Gloria Lombardo / Giada Leoni / Katja Culap / Carley McAlister / Anushka Rajesh / Exequiel Dellota / Jiayi Zhou / Nisar Farhat / Dana Bohan / Julia Noack / Alex Chen / Florian A Lempp / Joel Quispe / Lauriane Kergoat / Florence Larrous / Elisabetta Cameroni / Bradley Whitener / Olivier Giannini / Pietro Cippà / Alessandro Ceschi / Paolo Ferrari / Alessandra Franzetti-Pellanda / Maira Biggiogero / Christian Garzoni / Stephanie Zappi / Luca Bernasconi / Min Jeong Kim / Laura E Rosen / Gretja Schnell / Nadine Czudnochowski / Fabio Benigni / Nicholas Franko / Jennifer K Logue / Courtney Yoshiyama / Cameron Stewart / Helen Chu / Hervé Bourhy / Michael A Schmid / Lisa A Purcell / Gyorgy Snell / Antonio Lanzavecchia / Michael S Diamond / Davide Corti / David Veesler /
Abstract: Currently circulating SARS-CoV-2 variants have acquired convergent mutations at hot spots in the receptor-binding domain (RBD) of the spike protein. The effects of these mutations on viral infection ...Currently circulating SARS-CoV-2 variants have acquired convergent mutations at hot spots in the receptor-binding domain (RBD) of the spike protein. The effects of these mutations on viral infection and transmission and the efficacy of vaccines and therapies remains poorly understood. Here we demonstrate that recently emerged BQ.1.1 and XBB.1.5 variants bind host ACE2 with high affinity and promote membrane fusion more efficiently than earlier Omicron variants. Structures of the BQ.1.1, XBB.1 and BN.1 RBDs bound to the fragment antigen-binding region of the S309 antibody (the parent antibody for sotrovimab) and human ACE2 explain the preservation of antibody binding through conformational selection, altered ACE2 recognition and immune evasion. We show that sotrovimab binds avidly to all Omicron variants, promotes Fc-dependent effector functions and protects mice challenged with BQ.1.1 and hamsters challenged with XBB.1.5. Vaccine-elicited human plasma antibodies cross-react with and trigger effector functions against current Omicron variants, despite a reduced neutralizing activity, suggesting a mechanism of protection against disease, exemplified by S309. Cross-reactive RBD-directed human memory B cells remained dominant even after two exposures to Omicron spikes, underscoring the role of persistent immune imprinting.
History
DepositionMar 28, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 4, 2023Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Processed angiotensin-converting enzyme 2
E: Spike glycoprotein
H: S309 Fab Heavy chain
L: S309 Fab Light chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)152,74410
Polymers150,7444
Non-polymers2,0016
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 2 types, 2 molecules AE

#1: Protein Processed angiotensin-converting enzyme 2


Mass: 74492.406 Da / Num. of mol.: 1 / Fragment: ectodomain
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ACE2, UNQ868/PRO1885 / Production host: Homo sapiens (human) / References: UniProt: Q9BYF1
#2: Protein Spike glycoprotein / Spike protein


Mass: 28473.012 Da / Num. of mol.: 1 / Fragment: RBD
Source method: isolated from a genetically manipulated source
Details: BN.1
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus
Gene: S, 2 / Production host: Homo sapiens (human) / References: UniProt: P0DTC2

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Antibody , 2 types, 2 molecules HL

#3: Antibody S309 Fab Heavy chain


Mass: 24573.471 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 S309 Fab Light chain


Mass: 23204.697 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, 6 molecules

#5: Polysaccharide alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 894.823 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-6DManpb1-4DGlcpNAcb1-4[LFucpa1-6]DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/4,5,4/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5][a1221m-1a_1-5]/1-1-2-3-4/a4-b1_a6-e1_b4-c1_c6-d1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(6+1)][a-D-Manp]{}}}[(6+1)][a-L-Fucp]{}}}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 / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 5 / 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

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Details

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

Component
IDNameTypeEntity IDParent-IDSource
1SARS-CoV-2 BN.1 spike RBD bound to the human ACE2 ectodomain and the S309 neutralizing antibody Fab fragmentCOMPLEX#1-#40MULTIPLE SOURCES
2SARS-CoV-2 BN.1 spike RBD bound to the human ACE2 ectodomain and the S309 neutralizing antibody Fab fragmentCOMPLEX#1-#41RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Severe acute respiratory syndrome coronavirus 22697049
31Severe acute respiratory syndrome coronavirus 22697049
41Homo sapiens (human)9606
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
12Homo sapiens (human)9606
31Homo sapiens (human)9606
Buffer solutionpH: 8
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: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 3500 nm / Nominal defocus min: 500 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameCategory
2Leginonimage acquisition
12cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1852290 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL

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