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- PDB-7sbl: One RBD-up 1 of pre-fusion SARS-CoV-2 Delta variant spike protein -

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Entry
Database: PDB / ID: 7sbl
TitleOne RBD-up 1 of pre-fusion SARS-CoV-2 Delta variant spike protein
ComponentsSpike glycoproteinSpike protein
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 / 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 / fusion of virus membrane with host plasma membrane / 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 / membrane / identical protein binding / 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 / 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 ...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
Biological speciesSevere acute respiratory syndrome coronavirus 2
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 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_branch_scheme / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / struct_asym / struct_conn
Item: _em_software.category / _entity.formula_weight ..._em_software.category / _entity.formula_weight / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _pdbx_branch_scheme.asym_id / _pdbx_branch_scheme.auth_mon_id / _pdbx_branch_scheme.auth_seq_num / _pdbx_branch_scheme.entity_id / _pdbx_branch_scheme.mon_id / _pdbx_branch_scheme.num / _pdbx_branch_scheme.pdb_asym_id / _pdbx_branch_scheme.pdb_mon_id / _pdbx_branch_scheme.pdb_seq_num / _pdbx_entity_branch_descriptor.descriptor / _pdbx_entity_branch_link.atom_id_2 / _pdbx_entity_branch_link.comp_id_1 / _pdbx_entity_branch_link.entity_branch_list_num_1 / _pdbx_entity_branch_link.entity_branch_list_num_2 / _pdbx_entity_branch_link.entity_id / _pdbx_entity_branch_link.leaving_atom_id_2 / _pdbx_entity_branch_list.comp_id / _pdbx_entity_branch_list.entity_id / _pdbx_entity_branch_list.num / _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

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Structure visualization

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  • Deposited structure unit
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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)454,07857
Polymers434,1813
Non-polymers19,89854
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area54720 Å2
ΔGint70 kcal/mol
Surface area156850 Å2

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Components

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


Mass: 144726.938 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
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.: 10
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
#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.: 16
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
#4: 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
#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 / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 25 / 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

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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 1 of pre-fusion SARS-CoV-2 Delta variant spike protein
Type: COMPLEX
Details: One RBD-up 1 of pre-fusion SARS-CoV-2 Delta 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 chlorideNaClSodium chloride1
20.025 mol/LTris hydrochlorideTris-HClTris1
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 FIELDBright-field microscopy
Image recordingElectron dose: 51.48 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: 1830328
3D reconstructionResolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 191067 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL
Atomic model buildingPDB-ID: 7KRR

7krr


Pdb chain-ID: A / Pdb chain residue range: 14-1211
RefinementResolution: 3.44→396 Å / SU ML: 0.57 / σ(F): 0.52 / Phase error: 48.89 / Stereochemistry target values: MLHL
RfactorNum. reflection% reflection
Rfree0.4248 2030 0.06 %
Rwork0.4223 --
obs0.4223 3193132 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_d0.01328431
ELECTRON MICROSCOPYf_angle_d1.76238682
ELECTRON MICROSCOPYf_dihedral_angle_d14.52210401
ELECTRON MICROSCOPYf_chiral_restr0.1144704
ELECTRON MICROSCOPYf_plane_restr0.0124845
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
3.44-3.520.541440.5368212477ELECTRON MICROSCOPY100
3.52-3.610.53191200.5371213097ELECTRON MICROSCOPY100
3.61-3.710.51231320.5226213115ELECTRON MICROSCOPY100
3.71-3.810.53991440.5132213041ELECTRON MICROSCOPY100
3.82-3.940.48931200.4918212785ELECTRON MICROSCOPY100
3.94-4.080.51421440.4826212543ELECTRON MICROSCOPY100
4.08-4.240.46581200.4638212748ELECTRON MICROSCOPY100
4.24-4.430.42961440.4454213146ELECTRON MICROSCOPY100
4.44-4.670.41561200.4131212643ELECTRON MICROSCOPY100
4.67-4.960.43691440.413212921ELECTRON MICROSCOPY100
4.96-5.340.40941440.4185212805ELECTRON MICROSCOPY100
5.35-5.880.44941320.4125212833ELECTRON MICROSCOPY100
5.88-6.730.44421440.4157213046ELECTRON MICROSCOPY100
6.73-8.480.30941320.3687212692ELECTRON MICROSCOPY100
8.49-3960.30321460.2755211210ELECTRON MICROSCOPY99

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