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Open data
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Basic information
Entry | Database: PDB / ID: 7fdk | ||||||
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Title | SARS-COV-2 Spike RBDMACSp36 binding to mACE2 | ||||||
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![]() | VIRAL PROTEIN / SARS-COV-2 Spike / mACE2 | ||||||
Function / homology | ![]() 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 | ||||||
Biological species | ![]() ![]() ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.69 Å | ||||||
![]() | Wang, X. / Cao, L. | ||||||
![]() | ![]() Title: Characterization and structural basis of a lethal mouse-adapted SARS-CoV-2. Authors: Shihui Sun / Hongjing Gu / Lei Cao / Qi Chen / Qing Ye / Guan Yang / Rui-Ting Li / Hang Fan / Yong-Qiang Deng / Xiaopeng Song / Yini Qi / Min Li / Jun Lan / Rui Feng / Yan Guo / Na Zhu / Si ...Authors: Shihui Sun / Hongjing Gu / Lei Cao / Qi Chen / Qing Ye / Guan Yang / Rui-Ting Li / Hang Fan / Yong-Qiang Deng / Xiaopeng Song / Yini Qi / Min Li / Jun Lan / Rui Feng / Yan Guo / Na Zhu / Si Qin / Lei Wang / Yi-Fei Zhang / Chao Zhou / Lingna Zhao / Yuehong Chen / Meng Shen / Yujun Cui / Xiao Yang / Xinquan Wang / Wenjie Tan / Hui Wang / Xiangxi Wang / Cheng-Feng Qin / ![]() Abstract: There is an urgent need for animal models to study SARS-CoV-2 pathogenicity. Here, we generate and characterize a novel mouse-adapted SARS-CoV-2 strain, MASCp36, that causes severe respiratory ...There is an urgent need for animal models to study SARS-CoV-2 pathogenicity. Here, we generate and characterize a novel mouse-adapted SARS-CoV-2 strain, MASCp36, that causes severe respiratory symptoms, and mortality. Our model exhibits age- and gender-related mortality akin to severe COVID-19. Deep sequencing identified three amino acid substitutions, N501Y, Q493H, and K417N, at the receptor binding domain (RBD) of MASCp36, during in vivo passaging. All three RBD mutations significantly enhance binding affinity to its endogenous receptor, ACE2. Cryo-electron microscopy analysis of human ACE2 (hACE2), or mouse ACE2 (mACE2), in complex with the RBD of MASCp36, at 3.1 to 3.7 Å resolution, reveals the molecular basis for the receptor-binding switch. N501Y and Q493H enhance the binding affinity to hACE2, whereas triple mutations at N501Y/Q493H/K417N decrease affinity and reduce infectivity of MASCp36. Our study provides a platform for studying SARS-CoV-2 pathogenesis, and unveils the molecular mechanism for its rapid adaptation and evolution. | ||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 150.5 KB | Display | ![]() |
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PDB format | ![]() | 122.2 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 831.6 KB | Display | ![]() |
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Full document | ![]() | 849.3 KB | Display | |
Data in XML | ![]() | 30.2 KB | Display | |
Data in CIF | ![]() | 43.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 31546MC ![]() 7fdgC ![]() 7fdhC ![]() 7fdiC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 71708.430 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: Q8R0I0, angiotensin-converting enzyme 2, Hydrolases; Acting on peptide bonds (peptidases); Metallocarboxypeptidases | ||
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#2: Protein | Mass: 24096.109 Da / Num. of mol.: 1 / Mutation: K417N, Q493H, N501Y Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: S, 2 / Production host: ![]() | ||
#3: Sugar | Has ligand of interest | N | |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: SARS-COV-2 Spike RBDMACSp36-mACE2 / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT |
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Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Microscopy | Model: FEI TITAN |
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Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 60 e/Å2 / Film or detector model: GATAN K2 BASE (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.17.1_3660: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.69 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 162615 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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