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- PDB-6cs2: SARS Spike Glycoprotein - human ACE2 complex, Stabilized variant,... -

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Basic information

Entry
Database: PDB / ID: 6cs2
TitleSARS Spike Glycoprotein - human ACE2 complex, Stabilized variant, all ACE2-bound particles
Components
  • Angiotensin-converting enzyme 2
  • Spike glycoprotein,Fibritin
Keywordsviral protein/hydrolase / membrane fusion / glycoprotein / receptor binding / VIRAL PROTEIN / viral protein-hydrolase complex
Function / homology
Function and homology information


Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / 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 ...Maturation of spike protein / Translation of Structural Proteins / Virion Assembly and Release / 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 / carboxypeptidase activity / negative regulation of signaling receptor activity / viral life cycle / regulation of cytokine production / positive regulation of cardiac muscle contraction / blood vessel diameter maintenance / negative regulation of smooth muscle cell proliferation / regulation of transmembrane transporter activity / brush border membrane / endocytosis involved in viral entry into host cell / cilium / negative regulation of ERK1 and ERK2 cascade / endocytic vesicle membrane / SARS-CoV-1 activates/modulates innate immune responses / metallopeptidase activity / positive regulation of reactive oxygen species metabolic process / virus receptor activity / regulation of cell population proliferation / regulation of inflammatory response / endopeptidase activity / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / 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 / 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 / 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
Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV / Fibritin C-terminal / Fibritin C-terminal region / 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 / Fibritin C-terminal / Fibritin C-terminal region / 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, 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
Fibritin / Spike glycoprotein / Angiotensin-converting enzyme 2
Similarity search - Component
Biological speciesHuman SARS coronavirus
Enterobacteria phage T4 (virus)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.4 Å
AuthorsKirchdoerfer, R.N. / Wang, N. / Pallesen, J. / Turner, H.L. / Cottrell, C.A. / McLellan, J.S. / Ward, A.B.
Funding support United States, 3items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01AI127521 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)K99AI123498 United States
National Institutes of Health/Office of the DirectorS10OD021634 United States
CitationJournal: Sci Rep / Year: 2018
Title: Stabilized coronavirus spikes are resistant to conformational changes induced by receptor recognition or proteolysis.
Authors: Robert N Kirchdoerfer / Nianshuang Wang / Jesper Pallesen / Daniel Wrapp / Hannah L Turner / Christopher A Cottrell / Kizzmekia S Corbett / Barney S Graham / Jason S McLellan / Andrew B Ward /
Abstract: Severe acute respiratory syndrome coronavirus (SARS-CoV) emerged in 2002 as a highly transmissible pathogenic human betacoronavirus. The viral spike glycoprotein (S) utilizes angiotensin-converting ...Severe acute respiratory syndrome coronavirus (SARS-CoV) emerged in 2002 as a highly transmissible pathogenic human betacoronavirus. The viral spike glycoprotein (S) utilizes angiotensin-converting enzyme 2 (ACE2) as a host protein receptor and mediates fusion of the viral and host membranes, making S essential to viral entry into host cells and host species tropism. As SARS-CoV enters host cells, the viral S is believed to undergo a number of conformational transitions as it is cleaved by host proteases and binds to host receptors. We recently developed stabilizing mutations for coronavirus spikes that prevent the transition from the pre-fusion to post-fusion states. Here, we present cryo-EM analyses of a stabilized trimeric SARS-CoV S, as well as the trypsin-cleaved, stabilized S, and its interactions with ACE2. Neither binding to ACE2 nor cleavage by trypsin at the S1/S2 cleavage site impart large conformational changes within stabilized SARS-CoV S or expose the secondary cleavage site, S2'.
History
DepositionMar 19, 2018Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 11, 2018Provider: repository / Type: Initial release
Revision 1.1Apr 25, 2018Group: Data collection / Database references ...Data collection / Database references / Source and taxonomy / Structure summary
Category: entity / entity_src_gen ...entity / entity_src_gen / struct_keywords / struct_ref / struct_ref_seq / struct_ref_seq_dif
Item: _entity.pdbx_description / _entity.pdbx_mutation ..._entity.pdbx_description / _entity.pdbx_mutation / _entity_src_gen.gene_src_common_name / _entity_src_gen.pdbx_gene_src_gene / _entity_src_gen.pdbx_gene_src_ncbi_taxonomy_id / _entity_src_gen.pdbx_gene_src_scientific_name / _struct_keywords.pdbx_keywords / _struct_keywords.text / _struct_ref.db_code / _struct_ref.pdbx_align_begin / _struct_ref.pdbx_db_accession / _struct_ref.pdbx_seq_one_letter_code / _struct_ref_seq.db_align_beg / _struct_ref_seq.db_align_end / _struct_ref_seq.pdbx_auth_seq_align_beg / _struct_ref_seq.pdbx_auth_seq_align_end / _struct_ref_seq.pdbx_db_accession / _struct_ref_seq.seq_align_beg / _struct_ref_seq.seq_align_end
Revision 1.2Dec 12, 2018Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.3Feb 20, 2019Group: Author supporting evidence / Data collection / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 1.4Dec 18, 2019Group: Author supporting evidence / Other / Category: atom_sites / pdbx_audit_support
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] ..._atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3] / _pdbx_audit_support.funding_organization
Revision 2.0Jul 29, 2020Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _pdbx_struct_assembly_gen.asym_id_list / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation

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Assembly

Deposited unit
A: Spike glycoprotein,Fibritin
B: Spike glycoprotein,Fibritin
C: Spike glycoprotein,Fibritin
D: Angiotensin-converting enzyme 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)492,05837
Polymers474,2454
Non-polymers17,81233
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 2 types, 4 molecules ABCD

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


Mass: 134739.266 Da / Num. of mol.: 3 / Mutation: K968P, V969P
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human SARS coronavirus, (gene. exp.) Enterobacteria phage T4 (virus)
Gene: S, 2, wac, T4Tp161 / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: P59594, UniProt: D9IEJ2
#2: Protein Angiotensin-converting enzyme 2 / / ACE-related carboxypeptidase / Angiotensin-converting enzyme homolog / ACEH / Metalloprotease MPROT15


Mass: 70027.664 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ACE2, UNQ868/PRO1885 / Cell line (production host): HEK293F / Production host: Homo sapiens (human)
References: UniProt: Q9BYF1, angiotensin-converting enzyme 2

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Sugars , 5 types, 33 molecules

#3: 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.: 9
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam 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
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}}LINUCSPDB-CARE
#4: 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.: 7
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam 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
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#5: Polysaccharide
alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 748.682 Da / Num. of mol.: 10
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,4,3/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3/a4-b1_b4-c1_c3-d1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#6: 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)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 748.682 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-6DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,4,3/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3/a4-b1_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]{}}}}}LINUCSPDB-CARE
#7: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
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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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: SARS Spike Glycoprotein - ACE2 complex / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Molecular weightValue: 0.620 MDa / Experimental value: NO
Source (natural)Organism: SARS coronavirus / Strain: Tor2
Source (recombinant)Organism: Homo sapiens (human) / Cell: HEK293F
Details of virusEmpty: YES / Enveloped: YES / Isolate: SPECIES / Type: VIRION
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
125 mMTrisCl1
2150 mMSodium chlorideNaClSodium chloride1
30.01 % (w/v)A8-351
SpecimenConc.: 0.35 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid type: C-flat-2/2 4C
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 298 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 / Nominal magnification: 29000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 1200 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 0.25 sec. / Electron dose: 65 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1
Image scansMovie frames/image: 24

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Processing

Software
NameVersionClassification
phenix.real_space_refine1.12rc0_2784refinement
PHENIX1.12rc0_2784refinement
EM software
IDNameVersionCategory
2Leginonimage acquisition
4Gctf1.06CTF correction
7Coot0.8.2model fitting
9RELION2.1initial Euler assignment
10RELION2.1final Euler assignment
11RELION2.1classification
12RELION2.13D reconstruction
13PHENIX1.12model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 4.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 66771 / Symmetry type: POINT
Atomic model building
IDPDB-IDPdb chain-ID 3D fitting-IDPdb chain residue range
15I08A1299-323
25I08A1610-1147
35X4SA118-258
42AJFE1323-502
52AJFA119-615
RefinementStereochemistry target values: GeoStd + Monomer Library
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.006092533842528618
ELECTRON MICROSCOPYf_angle_d0.92350517786139092
ELECTRON MICROSCOPYf_chiral_restr0.05390775183724625
ELECTRON MICROSCOPYf_plane_restr0.006439614377134915
ELECTRON MICROSCOPYf_dihedral_angle_d8.579534241816944

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