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- PDB-7wri: Cryo-EM structure of SARS-CoV-2 Omicron spike receptor-binding do... -

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Basic information

Entry
Database: PDB / ID: 7wri
TitleCryo-EM structure of SARS-CoV-2 Omicron spike receptor-binding domain in complex with mouse ACE2
Components
  • Processed angiotensin-converting enzyme 2
  • Spike glycoprotein
KeywordsVIRAL PROTEIN / Complex
Function / homology
Function and homology information


Metabolism of Angiotensinogen to Angiotensins / 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 cardiac conduction / peptidyl-dipeptidase activity / maternal process involved in female pregnancy ...Metabolism of Angiotensinogen to Angiotensins / 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 cardiac conduction / peptidyl-dipeptidase activity / maternal process involved in female pregnancy / carboxypeptidase activity / positive regulation of cardiac muscle contraction / brush border membrane / negative regulation of smooth muscle cell proliferation / negative regulation of ERK1 and ERK2 cascade / cilium / metallopeptidase activity / virus receptor activity / Maturation of spike protein / endopeptidase activity / 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 / apical plasma membrane / 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 / cell surface / proteolysis / extracellular space / identical protein binding / membrane / metal ion binding / plasma membrane / cytoplasm
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 / Trp-Asp (WD) repeats signature.
Similarity search - Domain/homology
Spike glycoprotein / Angiotensin-converting enzyme 2
Similarity search - Component
Biological speciesMus musculus (house mouse)
Severe acute respiratory syndrome coronavirus 2
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.03 Å
AuthorsHan, P. / Xie, Y. / Qi, J.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32192452 China
CitationJournal: Cell Discov / Year: 2022
Title: Broader-species receptor binding and structural bases of Omicron SARS-CoV-2 to both mouse and palm-civet ACE2s.
Authors: Linjie Li / Pu Han / Baihan Huang / Yufeng Xie / Weiwei Li / Di Zhang / Pengcheng Han / Zepeng Xu / Bin Bai / Jingya Zhou / Xinrui Kang / Xiaomei Li / Anqi Zheng / Rong Zhang / Shitong Qiao ...Authors: Linjie Li / Pu Han / Baihan Huang / Yufeng Xie / Weiwei Li / Di Zhang / Pengcheng Han / Zepeng Xu / Bin Bai / Jingya Zhou / Xinrui Kang / Xiaomei Li / Anqi Zheng / Rong Zhang / Shitong Qiao / Xin Zhao / Jianxun Qi / Qihui Wang / Kefang Liu / George Fu Gao /
Abstract: The Omicron variant of SARS-CoV-2 carries multiple unusual mutations, particularly in the receptor-binding domain (RBD) of the spike (S) protein. Moreover, host-adapting mutations, such as residues ...The Omicron variant of SARS-CoV-2 carries multiple unusual mutations, particularly in the receptor-binding domain (RBD) of the spike (S) protein. Moreover, host-adapting mutations, such as residues 493, 498, and 501, were also observed in the Omicron RBD, which indicates that it is necessary to evaluate the interspecies transmission risk of the Omicron variant. Herein, we evaluated the interspecies recognition of the Omicron BA.1 and Delta RBDs by 27 ACE2 orthologs, including humans. We found that Omicron BA.1 expanded its receptor binding spectra to palm-civet, rodents, more bats (least horseshoe bat and greater horseshoe bat) and lesser hedgehog tenrec. Additionally, we determined the cryo-electron microscopy (cryo-EM) structure of the Omicron BA.1 S protein complexed with mouse ACE2 (mACE2) and the crystal structure of Omicron RBD complexed with palm-civet ACE2 (cvACE2). Several key residues for the host range have been identified. These results suggest that surveillance should be enhanced on the Omicron variant for its broader-species receptor binding to prevent spillover and expansion of reservoir hosts for a prolonged pandemic.
History
DepositionJan 26, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jun 8, 2022Provider: repository / Type: Initial release
Revision 1.1Oct 12, 2022Group: Source and taxonomy / Structure summary / Category: entity / entity_src_gen
Item: _entity.pdbx_ec / _entity.pdbx_fragment ..._entity.pdbx_ec / _entity.pdbx_fragment / _entity_src_gen.gene_src_common_name / _entity_src_gen.pdbx_gene_src_ncbi_taxonomy_id / _entity_src_gen.pdbx_gene_src_scientific_name / _entity_src_gen.pdbx_host_org_cell_line
Revision 1.2Dec 21, 2022Group: Database references / Refinement description
Category: citation / citation_author / pdbx_initial_refinement_model
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _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.year / _citation_author.identifier_ORCID / _citation_author.name

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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
B: Spike glycoprotein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)206,7074
Polymers206,4202
Non-polymers2872
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area1900 Å2
ΔGint-34 kcal/mol
Surface area36190 Å2

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Components

#1: Protein Processed angiotensin-converting enzyme 2


Mass: 69218.594 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Gene: Ace2 / Production host: Escherichia coli (E. coli)
References: UniProt: Q8R0I0, angiotensin-converting enzyme 2
#2: Protein Spike glycoprotein / S glycoprotein / E2 / Peplomer protein


Mass: 137201.359 Da / Num. of mol.: 1 / Fragment: UNP residues 14-1205
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: S, 2 / Cell line (production host): HEK293 / Production host: Homo sapiens (human) / References: UniProt: P0DTC2
#3: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION
#4: 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.: 1 / 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

Component
IDNameTypeEntity IDParent-IDSource
1Complex of SARS-CoV-2 Omicron spike protein with mouse ACE2COMPLEX#1-#20RECOMBINANT
2mouse ACE2COMPLEX#11RECOMBINANT
3SARS-CoV-2 Omicron spike proteinCOMPLEX#21RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
11Homo sapiens (human)9606
22Severe acute respiratory syndrome coronavirus 22697049
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
11Escherichia coli (E. coli)562
22Homo sapiens (human)9606
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE / Humidity: 100 %

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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 / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.19.2_4158: / Classification: refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.03 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 503967 / Symmetry type: POINT
Atomic model buildingPDB-ID: 6LZG

6lzg

Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0036612
ELECTRON MICROSCOPYf_angle_d0.5778983
ELECTRON MICROSCOPYf_dihedral_angle_d15.4992401
ELECTRON MICROSCOPYf_chiral_restr0.039936
ELECTRON MICROSCOPYf_plane_restr0.0041166

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