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- PDB-7c8k: Structural basis for cross-species recognition of COVID-19 virus ... -

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Basic information

Entry
Database: PDB / ID: 7c8k
TitleStructural basis for cross-species recognition of COVID-19 virus spike receptor binding domain to bat ACE2
ComponentsAngiotensin-converting enzyme
KeywordsPROTEIN BINDING / COVID-19 / receptor binding domain (RBD) / Rhinolophus macrotis
Function / homology
Function and homology information


Hydrolases; Acting on peptide bonds (peptidases) / peptidyl-dipeptidase activity / carboxypeptidase activity / cilium / metallopeptidase activity / apical plasma membrane / proteolysis / extracellular region / metal ion binding / cytoplasm
Similarity search - Function
Collectrin domain / Renal amino acid transporter / Peptidase M2, peptidyl-dipeptidase A / Angiotensin-converting enzyme
Similarity search - Domain/homology
Angiotensin-converting enzyme
Similarity search - Component
Biological speciesRhinolophus macrotis (Big-eared Horseshoe Bat)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsLiu, K.F. / Wang, J. / Tan, S.G. / Niu, S. / Wu, L.L. / Zhang, Y.F. / Pan, X.Q. / Meng, Y.M. / Chen, Q. / Wang, Q.H. ...Liu, K.F. / Wang, J. / Tan, S.G. / Niu, S. / Wu, L.L. / Zhang, Y.F. / Pan, X.Q. / Meng, Y.M. / Chen, Q. / Wang, Q.H. / Wang, H.W. / Qi, J.X. / Gao, G.F.
CitationJournal: Proc Natl Acad Sci U S A / Year: 2021
Title: Cross-species recognition of SARS-CoV-2 to bat ACE2.
Authors: Kefang Liu / Shuguang Tan / Sheng Niu / Jia Wang / Lili Wu / Huan Sun / Yanfang Zhang / Xiaoqian Pan / Xiao Qu / Pei Du / Yumin Meng / Yunfei Jia / Qian Chen / Chuxia Deng / Jinghua Yan / ...Authors: Kefang Liu / Shuguang Tan / Sheng Niu / Jia Wang / Lili Wu / Huan Sun / Yanfang Zhang / Xiaoqian Pan / Xiao Qu / Pei Du / Yumin Meng / Yunfei Jia / Qian Chen / Chuxia Deng / Jinghua Yan / Hong-Wei Wang / Qihui Wang / Jianxun Qi / George Fu Gao /
Abstract: The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has emerged as a major threat to global health. Although varied SARS-CoV-2- ...The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has emerged as a major threat to global health. Although varied SARS-CoV-2-related coronaviruses have been isolated from bats and SARS-CoV-2 may infect bat, the structural basis for SARS-CoV-2 to utilize the human receptor counterpart bat angiotensin-converting enzyme 2 (bACE2) for virus infection remains less understood. Here, we report that the SARS-CoV-2 spike protein receptor binding domain (RBD) could bind to bACE2 from (bACE2-Rm) with substantially lower affinity compared with that to the human ACE2 (hACE2), and its infectivity to host cells expressing bACE2-Rm was confirmed with pseudotyped SARS-CoV-2 virus and SARS-CoV-2 wild virus. The structure of the SARS-CoV-2 RBD with the bACE2-Rm complex was determined, revealing a binding mode similar to that of hACE2. The analysis of binding details between SARS-CoV-2 RBD and bACE2-Rm revealed that the interacting network involving Y41 and E42 of bACE2-Rm showed substantial differences with that to hACE2. Bats have extensive species diversity and the residues for RBD binding in bACE2 receptor varied substantially among different bat species. Notably, the Y41H mutant, which exists in many bats, attenuates the binding capacity of bACE2-Rm, indicating the central roles of Y41 in the interaction network. These findings would benefit our understanding of the potential infection of SARS-CoV-2 in varied species of bats.
History
DepositionJun 2, 2020Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jan 27, 2021Provider: repository / Type: Initial release

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Structure visualization

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Assembly

Deposited unit
A: Angiotensin-converting enzyme
hetero molecules


Theoretical massNumber of molelcules
Total (without water)70,5986
Polymers69,4441
Non-polymers1,1535
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area1200 Å2
ΔGint-18 kcal/mol
Surface area26360 Å2

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Components

#1: Protein Angiotensin-converting enzyme /


Mass: 69444.312 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rhinolophus macrotis (Big-eared Horseshoe Bat)
Gene: ACE2 / Production host: Homo sapiens (human)
References: UniProt: E2DHI3, Hydrolases; Acting on peptide bonds (peptidases)
#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.: 1
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
#3: 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.: 3
Source method: isolated from a genetically manipulated source
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
#4: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION
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: Bat ACE2 / Type: CELL / Entity ID: #1 / Source: RECOMBINANT
Source (natural)Organism: Bat AAV SC2991 (virus)
Source (recombinant)Organism: Homo sapiens (human)
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
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.16_3549: / Classification: refinement
CTF correctionType: NONE
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 62289 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0024989
ELECTRON MICROSCOPYf_angle_d0.4186773
ELECTRON MICROSCOPYf_dihedral_angle_d10.6352937
ELECTRON MICROSCOPYf_chiral_restr0.037721
ELECTRON MICROSCOPYf_plane_restr0.003865

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