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- EMDB-9594: Trypsin-cleaved and low pH-treated SARS-CoV spike glycoprotein an... -

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Basic information

Entry
Database: EMDB / ID: EMD-9594
TitleTrypsin-cleaved and low pH-treated SARS-CoV spike glycoprotein and ACE2 complex, ACE2-bound conformation 3
Map data
Sample
  • Complex: Trypsin-cleaved and low pH-treated SARS-CoV spike glycoprotein and ACE2 complex
    • Complex: Trypsin-cleaved and low pH-treated SARS-CoV spike
      • Protein or peptide: Spike glycoprotein
    • Complex: human ACE2
      • Protein or peptide: Angiotensin-converting enzyme 2
KeywordsSARS-CoV / spike / glycoprotein / Class I fusion protein / membrane fusion / 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 / regulation of systemic arterial blood pressure by renin-angiotensin / 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 / regulation of systemic arterial blood pressure by renin-angiotensin / positive regulation of gap junction assembly / tryptophan transport / regulation of cardiac conduction / regulation of vasoconstriction / peptidyl-dipeptidase activity / maternal process involved in female pregnancy / angiotensin maturation / Metabolism of Angiotensinogen to Angiotensins / negative regulation of signaling receptor activity / carboxypeptidase activity / Attachment and Entry / positive regulation of cardiac muscle contraction / viral life cycle / regulation of cytokine production / blood vessel diameter maintenance / negative regulation of smooth muscle cell proliferation / brush border membrane / regulation of transmembrane transporter activity / endocytosis involved in viral entry into host cell / cilium / negative regulation of ERK1 and ERK2 cascade / positive regulation of reactive oxygen species metabolic process / metallopeptidase activity / SARS-CoV-1 activates/modulates innate immune responses / endocytic vesicle membrane / virus receptor activity / regulation of cell population proliferation / regulation of inflammatory response / endopeptidase activity / suppression by virus of host tetherin activity / Potential therapeutics for SARS / Induction of Cell-Cell Fusion / 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 / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / symbiont entry into host cell / membrane raft / apical plasma membrane / endoplasmic reticulum lumen / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / host cell plasma membrane / virion membrane / cell surface / extracellular space / extracellular exosome / zinc ion binding / extracellular region / identical protein binding / membrane / plasma membrane
Similarity search - Function
Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV / Collectrin domain / Renal amino acid transporter / Collectrin-like domain profile. / Peptidase M2, peptidyl-dipeptidase A / Angiotensin-converting enzyme / Peptidase family M2 domain profile. / Neutral zinc metallopeptidases, zinc-binding region signature. / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Spike glycoprotein, betacoronavirus ...Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV / Collectrin domain / Renal amino acid transporter / Collectrin-like domain profile. / Peptidase M2, peptidyl-dipeptidase A / Angiotensin-converting enzyme / Peptidase family M2 domain profile. / Neutral zinc metallopeptidases, zinc-binding region signature. / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Spike glycoprotein, betacoronavirus / Spike glycoprotein, N-terminal domain superfamily / Betacoronavirus spike (S) glycoprotein S1 subunit N-terminal (NTD) domain profile. / Betacoronavirus spike (S) glycoprotein S1 subunit C-terminal (CTD) domain profile. / 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 1 (HR1) region profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 2 (HR2) region profile. / Spike glycoprotein S2 superfamily, coronavirus / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2
Similarity search - Domain/homology
Spike glycoprotein / Angiotensin-converting enzyme 2
Similarity search - Component
Biological speciesSARS coronavirus / Homo sapiens (human) / Human SARS coronavirus
Methodsingle particle reconstruction / cryo EM / Resolution: 4.5 Å
AuthorsGui M / Song W
CitationJournal: PLoS Pathog / Year: 2018
Title: Cryo-EM structure of the SARS coronavirus spike glycoprotein in complex with its host cell receptor ACE2.
Authors: Wenfei Song / Miao Gui / Xinquan Wang / Ye Xiang /
Abstract: The trimeric SARS coronavirus (SARS-CoV) surface spike (S) glycoprotein consisting of three S1-S2 heterodimers binds the cellular receptor angiotensin-converting enzyme 2 (ACE2) and mediates fusion ...The trimeric SARS coronavirus (SARS-CoV) surface spike (S) glycoprotein consisting of three S1-S2 heterodimers binds the cellular receptor angiotensin-converting enzyme 2 (ACE2) and mediates fusion of the viral and cellular membranes through a pre- to postfusion conformation transition. Here, we report the structure of the SARS-CoV S glycoprotein in complex with its host cell receptor ACE2 revealed by cryo-electron microscopy (cryo-EM). The complex structure shows that only one receptor-binding domain of the trimeric S glycoprotein binds ACE2 and adopts a protruding "up" conformation. In addition, we studied the structures of the SARS-CoV S glycoprotein and its complexes with ACE2 in different in vitro conditions, which may mimic different conformational states of the S glycoprotein during virus entry. Disassociation of the S1-ACE2 complex from some of the prefusion spikes was observed and characterized. We also characterized the rosette-like structures of the clustered SARS-CoV S2 trimers in the postfusion state observed on electron micrographs. Structural comparisons suggested that the SARS-CoV S glycoprotein retains a prefusion architecture after trypsin cleavage into the S1 and S2 subunits and acidic pH treatment. However, binding to the receptor opens up the receptor-binding domain of S1, which could promote the release of the S1-ACE2 complex and S1 monomers from the prefusion spike and trigger the pre- to postfusion conformational transition.
History
DepositionJul 26, 2018-
Header (metadata) releaseAug 8, 2018-
Map releaseAug 8, 2018-
UpdateOct 23, 2024-
Current statusOct 23, 2024Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 8
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 8
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6ack
  • Surface level: 8
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_9594.png

Downloads & links

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Map

FileDownload / File: emd_9594.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.32 Å/pix.
x 288 pix.
= 380.16 Å		1.32 Å/pix.
x 288 pix.
= 380.16 Å		1.32 Å/pix.
x 288 pix.
= 380.16 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.32 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 8.0 / Movie #1: 8
Minimum - Maximum-14.551627999999999 - 29.587724999999999
Average (Standard dev.)-0.0011370535 (±0.9081506)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions288288288
Spacing288288288
CellA=B=C: 380.16 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.321.321.32
M x/y/z288288288
origin x/y/z0.0000.0000.000
length x/y/z380.160380.160380.160
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ288288288
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS288288288
D min/max/mean-14.55229.588-0.001

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Supplemental data

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Mask #1

Fileemd_9594_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Trypsin-cleaved and low pH-treated SARS-CoV spike glycoprotein an...

EntireName: Trypsin-cleaved and low pH-treated SARS-CoV spike glycoprotein and ACE2 complex
Components
  • Complex: Trypsin-cleaved and low pH-treated SARS-CoV spike glycoprotein and ACE2 complex
    • Complex: Trypsin-cleaved and low pH-treated SARS-CoV spike
      • Protein or peptide: Spike glycoprotein
    • Complex: human ACE2
      • Protein or peptide: Angiotensin-converting enzyme 2

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Supramolecule #1: Trypsin-cleaved and low pH-treated SARS-CoV spike glycoprotein an...

SupramoleculeName: Trypsin-cleaved and low pH-treated SARS-CoV spike glycoprotein and ACE2 complex
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all

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Supramolecule #2: Trypsin-cleaved and low pH-treated SARS-CoV spike

SupramoleculeName: Trypsin-cleaved and low pH-treated SARS-CoV spike / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1
Source (natural)Organism: SARS coronavirus

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Supramolecule #3: human ACE2

SupramoleculeName: human ACE2 / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Spike glycoprotein

MacromoleculeName: Spike glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human SARS coronavirus
Molecular weightTheoretical: 133.763422 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MFIFLLFLTL TSGSDLDRCT TFDDVQAPNY TQHTSSMRGV YYPDEIFRSD TLYLTQDLFL PFYSNVTGFH TINHTFGNPV IPFKDGIYF AATEKSNVVR GWVFGSTMNN KSQSVIIINN STNVVIRACN FELCDNPFFA VSKPMGTQTH TMIFDNAFNC T FEYISDAF ...String:
MFIFLLFLTL TSGSDLDRCT TFDDVQAPNY TQHTSSMRGV YYPDEIFRSD TLYLTQDLFL PFYSNVTGFH TINHTFGNPV IPFKDGIYF AATEKSNVVR GWVFGSTMNN KSQSVIIINN STNVVIRACN FELCDNPFFA VSKPMGTQTH TMIFDNAFNC T FEYISDAF SLDVSEKSGN FKHLREFVFK NKDGFLYVYK GYQPIDVVRD LPSGFNTLKP IFKLPLGINI TNFRAILTAF SP AQDIWGT SAAAYFVGYL KPTTFMLKYD ENGTITDAVD CSQNPLAELK CSVKSFEIDK GIYQTSNFRV VPSGDVVRFP NIT NLCPFG EVFNATKFPS VYAWERKKIS NCVADYSVLY NSTFFSTFKC YGVSATKLND LCFSNVYADS FVVKGDDVRQ IAPG QTGVI ADYNYKLPDD FMGCVLAWNT RNIDATSTGN YNYKYRYLRH GKLRPFERDI SNVPFSPDGK PCTPPALNCY WPLND YGFY TTTGIGYQPY RVVVLSFELL NAPATVCGPK LSTDLIKNQC VNFNFNGLTG TGVLTPSSKR FQPFQQFGRD VSDFTD SVR DPKTSEILDI SPCSFGGVSV ITPGTNASSE VAVLYQDVNC TDVSTAIHAD QLTPAWRIYS TGNNVFQTQA GCLIGAE HV DTSYECDIPI GAGICASYHT VSLLRSTSQK SIVAYTMSLG ADSSIAYSNN TIAIPTNFSI SITTEVMPVS MAKTSVDC N MYICGDSTEC ANLLLQYGSF CTQLNRALSG IAAEQDRNTR EVFAQVKQMY KTPTLKYFGG FNFSQILPDP LKPTKRSFI EDLLFNKVTL ADAGFMKQYG ECLGDINARD LICAQKFNGL TVLPPLLTDD MIAAYTAALV SGTATAGWTF GAGAALQIPF AMQMAYRFN GIGVTQNVLY ENQKQIANQF NKAISQIQES LTTTSTALGK LQDVVNQNAQ ALNTLVKQLS SNFGAISSVL N DILSRLDK VEAEVQIDRL ITGRLQSLQT YVTQQLIRAA EIRASANLAA TKMSECVLGQ SKRVDFCGKG YHLMSFPQAA PH GVVFLHV TYVPSQERNF TTAPAICHEG KAYFPREGVF VFNGTSWFIT QRNFFSPQII TTDNTFVSGN CDVVIGIINN TVY DPLQPE LDSFKEELDK YFKNHTSPDV DLGDISGINA SVVNIQKEID RLNEVAKNLN ESLIDLQELG KYEQYIKWPW SHPQ FEK

UniProtKB: Spike glycoprotein

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Macromolecule #2: Angiotensin-converting enzyme 2

MacromoleculeName: Angiotensin-converting enzyme 2 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO / EC number: angiotensin-converting enzyme 2
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 69.982562 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: STIEEQAKTF LDKFNHEAED LFYQSSLASW NYNTNITEEN VQNMNNAGDK WSAFLKEQST LAQMYPLQEI QNLTVKLQLQ ALQQNGSSV LSEDKSKRLN TILNTMSTIY STGKVCNPDN PQECLLLEPG LNEIMANSLD YNERLWAWES WRSEVGKQLR P LYEEYVVL ...String:
STIEEQAKTF LDKFNHEAED LFYQSSLASW NYNTNITEEN VQNMNNAGDK WSAFLKEQST LAQMYPLQEI QNLTVKLQLQ ALQQNGSSV LSEDKSKRLN TILNTMSTIY STGKVCNPDN PQECLLLEPG LNEIMANSLD YNERLWAWES WRSEVGKQLR P LYEEYVVL KNEMARANHY EDYGDYWRGD YEVNGVDGYD YSRGQLIEDV EHTFEEIKPL YEHLHAYVRA KLMNAYPSYI SP IGCLPAH LLGDMWGRFW TNLYSLTVPF GQKPNIDVTD AMVDQAWDAQ RIFKEAEKFF VSVGLPNMTQ GFWENSMLTD PGN VQKAVC HPTAWDLGKG DFRILMCTKV TMDDFLTAHH EMGHIQYDMA YAAQPFLLRN GANEGFHEAV GEIMSLSAAT PKHL KSIGL LSPDFQEDNE TEINFLLKQA LTIVGTLPFT YMLEKWRWMV FKGEIPKDQW MKKWWEMKRE IVGVVEPVPH DETYC DPAS LFHVSNDYSF IRYYTRTLYQ FQFQEALCQA AKHEGPLHKC DISNSTEAGQ KLFNMLRLGK SEPWTLALEN VVGAKN MNV RPLLNYFEPL FTWLKDQNKN SFVGWSTDWS PYADHHHHHH

UniProtKB: Angiotensin-converting enzyme 2

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 5.8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average exposure time: 8.0 sec. / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: OTHER
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 4.5 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 1.4) / Number images used: 56553
Initial angle assignmentType: COMMON LINE
Final angle assignmentType: PROJECTION MATCHING
FSC plot (resolution estimation)

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