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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-31546 | |||||||||
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Title | SARS-COV-2 Spike RBDMACSp36 binding to mACE2 | |||||||||
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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 / negative regulation of smooth muscle cell proliferation / brush border membrane / cilium / negative regulation of ERK1 and ERK2 cascade / metallopeptidase activity / virus receptor activity / endopeptidase activity / 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 / symbiont-mediated suppression of host innate immune response / 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 | 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. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 37.8 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 12.2 KB 12.2 KB | Display Display | ![]() |
Images | ![]() | 55.5 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 460.9 KB | Display | ![]() |
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Full document | ![]() | 460.5 KB | Display | |
Data in XML | ![]() | 5.7 KB | Display | |
Data in CIF | ![]() | 6.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7fdkMC ![]() 7fdgC ![]() 7fdhC ![]() 7fdiC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Voxel size | X=Y=Z: 1.04 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : SARS-COV-2 Spike RBDMACSp36-mACE2
Entire | Name: SARS-COV-2 Spike RBDMACSp36-mACE2 |
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Components |
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-Supramolecule #1: SARS-COV-2 Spike RBDMACSp36-mACE2
Supramolecule | Name: SARS-COV-2 Spike RBDMACSp36-mACE2 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2 |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() |
-Macromolecule #1: Angiotensin-converting enzyme 2
Macromolecule | Name: Angiotensin-converting enzyme 2 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: angiotensin-converting enzyme 2 |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 71.70843 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MSSSSWLLLS LVAVTAAQSL TEENAKTFLN NFNQEAEDLS YQSSLASWNY NTNITEENAQ KMSEAAAKWS AFYEEQSKTA QSFSLQEIQ TPIIKRQLQA LQQSGSSALS ADKNKQLNTI LNTMSTIYST GKVCNPKNPQ ECLLLEPGLD EIMATSTDYN S RLWAWEGW ...String: MSSSSWLLLS LVAVTAAQSL TEENAKTFLN NFNQEAEDLS YQSSLASWNY NTNITEENAQ KMSEAAAKWS AFYEEQSKTA QSFSLQEIQ TPIIKRQLQA LQQSGSSALS ADKNKQLNTI LNTMSTIYST GKVCNPKNPQ ECLLLEPGLD EIMATSTDYN S RLWAWEGW RAEVGKQLRP LYEEYVVLKN EMARANNYND YGDYWRGDYE AEGADGYNYN RGQLIEDVEH TFAEIKPLYE HL HAYVRRK LMDTYPSYIS PTGCLPAHLL GDMWGRFWTN LYPLTVPFAQ KPNIDVTDAM MNQGWDAERI FKEAEKFFVS VGL PHMTQG FWANSMLTDE ADGRKVVCHP TAWDLGHGDF RIKMCTKVTM DNFLTAHHEM GHIQYDMAYA RQPFLLRNGA NEGF HEAVG EIMSLSAATP KHLKSIGLLP SDFQEDSETE INFLLKQALT IVGTLPFTYM LEKWRWMVFR GEIPKEQWMK KWWEM KREI VGVVEPLPHD ETYCDPASLF HVSNDYSFIR YYTRTIYQFQ FQEALCQAAK YNGSLHKCDI SNSTEAGQKL LKMLSL GNS EPWTKALENV VGARNMDVKP LLNYFQPLFD WLKEQNRNSF VGWNTEWSPY ADHHHHHH |
-Macromolecule #2: Spike protein S1
Macromolecule | Name: Spike protein S1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 24.096109 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MFVFLVLLPL VSSTNLCPFG EVFNATRFAS VYAWNRKRIS NCVADYSVLY NSASFSTFKC YGVSPTKLND LCFTNVYADS FVIRGDEVR QIAPGQTGNI ADYNYKLPDD FTGCVIAWNS NNLDSKVGGN YNYLYRLFRK SNLKPFERDI STEIYQAGST P CNGVEGFN ...String: MFVFLVLLPL VSSTNLCPFG EVFNATRFAS VYAWNRKRIS NCVADYSVLY NSASFSTFKC YGVSPTKLND LCFTNVYADS FVIRGDEVR QIAPGQTGNI ADYNYKLPDD FTGCVIAWNS NNLDSKVGGN YNYLYRLFRK SNLKPFERDI STEIYQAGST P CNGVEGFN CYFPLHSYGF QPTYGVGYQP YRVVVLSFEL LHAPATVCGH HHHHH |
-Macromolecule #3: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 3 / Number of copies: 3 / Formula: NAG |
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Molecular weight | Theoretical: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN |
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Image recording | Film or detector model: GATAN K2 BASE (4k x 4k) / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
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Image processing
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.69 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 162615 |
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Initial angle assignment | Type: ANGULAR RECONSTITUTION |
Final angle assignment | Type: RANDOM ASSIGNMENT |