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- PDB-7sbt: One RBD-up 2 of pre-fusion SARS-CoV-2 Gamma variant spike protein -

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Basic information

Entry
Database: PDB / ID: 7sbt
TitleOne RBD-up 2 of pre-fusion SARS-CoV-2 Gamma variant spike protein
ComponentsSpike glycoprotein
KeywordsVIRAL PROTEIN
Function / homology
Function and homology information


Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell ...Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated endocytosis of virus by host cell / membrane fusion / Attachment and Entry / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / receptor ligand activity / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / identical protein binding / membrane / plasma membrane
Similarity search - Function
Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein, betacoronavirus / Spike glycoprotein, N-terminal domain superfamily / 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 / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus ...Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein, betacoronavirus / Spike glycoprotein, N-terminal domain superfamily / 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 / Spike S1 subunit, receptor binding domain superfamily, betacoronavirus / Spike glycoprotein S1, N-terminal domain, betacoronavirus-like / Betacoronavirus-like spike glycoprotein S1, N-terminal / Betacoronavirus spike glycoprotein S1, receptor binding / 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 superfamily, coronavirus / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2
Similarity search - Domain/homology
Biological speciesSevere acute respiratory syndrome coronavirus 2
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.4 Å
AuthorsZhang, J. / Xiao, T.S. / Cai, Y.F. / Peng, H.Q. / Volloch, S.R. / Chen, B.
Funding support United States, 4items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI147884 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI141002 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI127193 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI39538 United States
CitationJournal: Science / Year: 2021
Title: Membrane fusion and immune evasion by the spike protein of SARS-CoV-2 Delta variant.
Authors: Jun Zhang / Tianshu Xiao / Yongfei Cai / Christy L Lavine / Hanqin Peng / Haisun Zhu / Krishna Anand / Pei Tong / Avneesh Gautam / Megan L Mayer / Richard M Walsh / Sophia Rits-Volloch / ...Authors: Jun Zhang / Tianshu Xiao / Yongfei Cai / Christy L Lavine / Hanqin Peng / Haisun Zhu / Krishna Anand / Pei Tong / Avneesh Gautam / Megan L Mayer / Richard M Walsh / Sophia Rits-Volloch / Duane R Wesemann / Wei Yang / Michael S Seaman / Jianming Lu / Bing Chen /
Abstract: The Delta variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has outcompeted previously prevalent variants and become a dominant strain worldwide. We report the structure, ...The Delta variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has outcompeted previously prevalent variants and become a dominant strain worldwide. We report the structure, function, and antigenicity of its full-length spike (S) trimer as well as those of the Gamma and Kappa variants, and compare their characteristics with the G614, Alpha, and Beta variants. Delta S can fuse membranes more efficiently at low levels of cellular receptor angiotensin converting enzyme 2 (ACE2), and its pseudotyped viruses infect target cells substantially faster than the other five variants, possibly accounting for its heightened transmissibility. Each variant shows different rearrangement of the antigenic surface of the amino-terminal domain of the S protein but only makes produces changes in the receptor binding domain (RBD), making the RBD a better target for therapeutic antibodies.
History
DepositionSep 25, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 10, 2021Provider: repository / Type: Initial release
Revision 2.0Nov 17, 2021Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / em_software ...atom_site / em_software / entity / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / struct_asym / struct_conn
Item: _em_software.category / _entity.pdbx_number_of_molecules / _pdbx_struct_assembly_gen.asym_id_list
Description: Ligand identity
Details: there is one special glycan site need to be deleted due to lack of glycan density in the map
Provider: author / Type: Coordinate replacement
Revision 2.1Dec 22, 2021Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID / _citation_author.name
Revision 2.2Oct 16, 2024Group: Data collection / Refinement description / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_3d_fitting_list / em_admin / pdbx_entry_details / pdbx_initial_refinement_model / pdbx_modification_feature / refine
Item: _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id ..._em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type / _em_admin.last_update / _pdbx_entry_details.has_protein_modification / _refine.ls_d_res_high / _refine.ls_d_res_low

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Structure visualization

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Structure viewerMolecule:
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Assembly

Deposited unit
A: Spike glycoprotein
B: Spike glycoprotein
C: Spike glycoprotein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)455,33760
Polymers434,9373
Non-polymers20,39957
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area51560 Å2
ΔGint80 kcal/mol
Surface area161110 Å2

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Components

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


Mass: 144979.156 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: S, 2 / Production host: Homo sapiens (human) / References: UniProt: P0DTC2
#2: 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.: 17
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
#3: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 570.542 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4[LFucpa1-6]DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1221m-1a_1-5]/1-1-2/a4-b1_a6-c1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}[(6+1)][a-L-Fucp]{}}LINUCSPDB-CARE
#4: Polysaccharide
alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...alpha-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.: 9
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1a_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][a-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.: 28 / 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
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: One RBD-up 2 of pre-fusion SARS-CoV-2 Gamma variant spike protein
Type: COMPLEX
Details: One RBD-up 2 of pre-fusion SARS-CoV-2 Gamma variant spike protein
Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 440 kDa/nm / Experimental value: NO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
10.15 mol/Lsodium chlorideNaCl1
20.025 mol/LTris hydrochlorideTris-HCl1
30.02 %n-dodecyl-D-maltopyranosideDDM1
SpecimenConc.: 1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K

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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
Image recordingElectron dose: 54.72 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: (1.19.1_4122: ???) / Classification: refinement
EM software
IDNameCategory
7Cootmodel fitting
9PHENIXmodel refinement
12RELIONclassification
13RELION3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1652420
3D reconstructionResolution: 4.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 36346 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL
Atomic model buildingPDB-ID: 7KRR

7krr


Pdb chain-ID: A / Accession code: 7KRR / Pdb chain residue range: 14-1211 / Source name: PDB / Type: experimental model
RefinementResolution: 4.4→4.4 Å / SU ML: 0.61 / σ(F): 0.32 / Phase error: 49.51 / Stereochemistry target values: MLHL
RfactorNum. reflection% reflection
Rfree0.4366 2002 0.07 %
Rwork0.4351 --
obs0.4351 3031438 99.95 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.01527790
ELECTRON MICROSCOPYf_angle_d1.94937801
ELECTRON MICROSCOPYf_dihedral_angle_d13.94310078
ELECTRON MICROSCOPYf_chiral_restr0.1464548
ELECTRON MICROSCOPYf_plane_restr0.0134761
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
3.5-3.590.60291440.5408216740ELECTRON MICROSCOPY100
3.59-3.680.53961320.5353215703ELECTRON MICROSCOPY100
3.68-3.790.48591440.5265216555ELECTRON MICROSCOPY100
3.79-3.920.5231680.5161217139ELECTRON MICROSCOPY100
3.92-4.060.45841320.5005216043ELECTRON MICROSCOPY100
4.06-4.220.47161320.4839216566ELECTRON MICROSCOPY100
4.22-4.410.4291320.4593217182ELECTRON MICROSCOPY100
4.41-4.640.43461440.4327216170ELECTRON MICROSCOPY100
4.64-4.930.42271440.4283216303ELECTRON MICROSCOPY100
4.93-5.310.45781440.4349216390ELECTRON MICROSCOPY100
5.31-5.850.46721440.4341216810ELECTRON MICROSCOPY100
5.85-6.690.45921440.438216284ELECTRON MICROSCOPY100
6.7-8.430.40911440.3928216655ELECTRON MICROSCOPY100
8.44-3960.29361540.292214896ELECTRON MICROSCOPY99

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