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- EMDB-32364: SARS-CoV-2 Delta S-ACE2-C3 -

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Basic information

Entry
Database: EMDB / ID: EMD-32364
TitleSARS-CoV-2 Delta S-ACE2-C3
Map data
Sample
  • Complex: SARS-Cov2 Delta variant S-ACE2-C3
    • Complex: SARS-Cov2 Delta variant A
      • Protein or peptide: Spike glycoproteinSpike protein
    • Complex: ACE2-C3
      • Protein or peptide: Angiotensin-converting enzyme 2
Function / homology
Function and homology information


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 / tryptophan transport / positive regulation of gap junction assembly / regulation of systemic arterial blood pressure by renin-angiotensin / regulation of vasoconstriction / regulation of cardiac conduction ...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 / tryptophan transport / positive regulation of gap junction assembly / regulation of systemic arterial blood pressure by renin-angiotensin / regulation of vasoconstriction / regulation of cardiac conduction / peptidyl-dipeptidase activity / angiotensin maturation / maternal process involved in female pregnancy / Metabolism of Angiotensinogen to Angiotensins / metallocarboxypeptidase activity / Attachment and Entry / negative regulation of signaling receptor activity / carboxypeptidase activity / regulation of cytokine production / positive regulation of cardiac muscle contraction / viral life cycle / blood vessel diameter maintenance / negative regulation of smooth muscle cell proliferation / regulation of transmembrane transporter activity / brush border membrane / cilium / negative regulation of ERK1 and ERK2 cascade / endocytic vesicle membrane / metallopeptidase activity / positive regulation of reactive oxygen species metabolic process / virus receptor activity / regulation of cell population proliferation / regulation of inflammatory response / Maturation of spike protein / viral translation / Translation of Structural Proteins / Virion Assembly and Release / host cell surface / host extracellular space / endopeptidase activity / suppression by virus of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / Potential therapeutics for SARS / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / entry receptor-mediated virion attachment to host cell / 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 / host cell surface receptor binding / symbiont entry into host cell / membrane raft / apical plasma membrane / fusion of virus membrane with host plasma membrane / endoplasmic reticulum lumen / fusion of virus membrane with host endosome membrane / viral envelope / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / cell surface / extracellular space / extracellular exosome / zinc ion binding / extracellular region / membrane / identical protein binding / plasma membrane
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
Similarity search - Domain/homology
Spike glycoprotein / Angiotensin-converting enzyme 2
Similarity search - Component
Biological speciesSevere acute respiratory syndrome coronavirus 2 / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsCong Y / Liu CX
Funding support China, 1 items
OrganizationGrant numberCountry
Chinese Academy of SciencesXDB29040300 China
CitationJournal: Nat Commun / Year: 2022
Title: Structural basis for SARS-CoV-2 Delta variant recognition of ACE2 receptor and broadly neutralizing antibodies.
Authors: Yifan Wang / Caixuan Liu / Chao Zhang / Yanxing Wang / Qin Hong / Shiqi Xu / Zuyang Li / Yong Yang / Zhong Huang / Yao Cong /
Abstract: The SARS-CoV-2 Delta variant is currently the dominant circulating strain in the world. Uncovering the structural basis of the enhanced transmission and altered immune sensitivity of Delta is ...The SARS-CoV-2 Delta variant is currently the dominant circulating strain in the world. Uncovering the structural basis of the enhanced transmission and altered immune sensitivity of Delta is particularly important. Here we present cryo-EM structures revealing two conformational states of Delta spike and S/ACE2 complex in four states. Our cryo-EM analysis suggests that RBD destabilizations lead to population shift towards the more RBD-up and S1 destabilized fusion-prone state, beneficial for engagement with ACE2 and shedding of S1. Noteworthy, we find the Delta T478K substitution plays a vital role in stabilizing and reshaping the RBM loop, enhancing interaction with ACE2. Collectively, increased propensity for more RBD-up states and the affinity-enhancing T478K substitution together contribute to increased ACE2 binding, providing structural basis of rapid spread of Delta. Moreover, we identify a previously generated MAb 8D3 as a cross-variant broadly neutralizing antibody and reveal that 8D3 binding induces a large K478 side-chain orientation change, suggesting 8D3 may use an "induced-fit" mechanism to tolerate Delta T478K mutation. We also find that all five RBD-targeting MAbs tested remain effective on Delta, suggesting that Delta well preserves the neutralizing antigenic landscape in RBD. Our findings shed new lights on the pathogenicity and antibody neutralization of Delta.
History
DepositionDec 9, 2021-
Header (metadata) releaseJan 12, 2022-
Map releaseJan 12, 2022-
UpdateMar 2, 2022-
Current statusMar 2, 2022Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.9
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.9
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7w9c
  • Surface level: 0.9
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_32364.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.093 Å
Density
Contour LevelBy AUTHOR: 0.8 / Movie #1: 0.9
Minimum - Maximum-2.1859598 - 3.8971534
Average (Standard dev.)0.0061288183 (±0.10190269)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 393.48 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0931.0931.093
M x/y/z360360360
origin x/y/z0.0000.0000.000
length x/y/z393.480393.480393.480
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS360360360
D min/max/mean-2.1863.8970.006

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Supplemental data

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Sample components

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Entire : SARS-Cov2 Delta variant S-ACE2-C3

EntireName: SARS-Cov2 Delta variant S-ACE2-C3
Components
  • Complex: SARS-Cov2 Delta variant S-ACE2-C3
    • Complex: SARS-Cov2 Delta variant A
      • Protein or peptide: Spike glycoproteinSpike protein
    • Complex: ACE2-C3
      • Protein or peptide: Angiotensin-converting enzyme 2

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Supramolecule #1: SARS-Cov2 Delta variant S-ACE2-C3

SupramoleculeName: SARS-Cov2 Delta variant S-ACE2-C3 / type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Recombinant expressionOrganism: Homo sapiens (human) / Recombinant cell: HEK293F

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Supramolecule #2: SARS-Cov2 Delta variant A

SupramoleculeName: SARS-Cov2 Delta variant A / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Homo sapiens (human) / Recombinant cell: HEK293F

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Supramolecule #3: ACE2-C3

SupramoleculeName: ACE2-C3 / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2

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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: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 140.085031 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MFVFLVLLPL VSSQCVNLRT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFD NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLGVYYHKNN KSWMESEFGV Y SSANNCTF ...String:
MFVFLVLLPL VSSQCVNLRT RTQLPPAYTN SFTRGVYYPD KVFRSSVLHS TQDLFLPFFS NVTWFHAIHV SGTNGTKRFD NPVLPFNDG VYFASTEKSN IIRGWIFGTT LDSKTQSLLI VNNATNVVIK VCEFQFCNDP FLGVYYHKNN KSWMESEFGV Y SSANNCTF EYVSQPFLMD LEGKQGNFKN LREFVFKNID GYFKIYSKHT PINLVRDLPQ GFSALEPLVD LPIGINITRF QT LLALHRS YLTPGDSSSG WTAGAAAYYV GYLQPRTFLL KYNENGTITD AVDCALDPLS ETKCTLKSFT VEKGIYQTSN FRV QPTESI VRFPNITNLC PFGEVFNATR FASVYAWNRK RISNCVADYS VLYNSASFST FKCYGVSPTK LNDLCFTNVY ADSF VIRGD EVRQIAPGQT GKIADYNYKL PDDFTGCVIA WNSNNLDSKV GGNYNYRYRL FRKSNLKPFE RDISTEIYQA GSKPC NGVE GFNCYFPLQS YGFQPTNGVG YQPYRVVVLS FELLHAPATV CGPKKSTNLV KNKCVNFNFN GLTGTGVLTE SNKKFL PFQ QFGRDIADTT DAVRDPQTLE ILDITPCSFG GVSVITPGTN TSNQVAVLYQ GVNCTEVPVA IHADQLTPTW RVYSTGS NV FQTRAGCLIG AEHVNNSYEC DIPIGAGICA SYQTQTNSRG SASSVASQSI IAYTMSLGAE NSVAYSNNSI AIPTNFTI S VTTEILPVSM TKTSVDCTMY ICGDSTECSN LLLQYGSFCT QLNRALTGIA VEQDKNTQEV FAQVKQIYKT PPIKDFGGF NFSQILPDPS KPSKRSFIED LLFNKVTLAD AGFIKQYGDC LGDIAARDLI CAQKFNGLTV LPPLLTDEMI AQYTSALLAG TITSGWTFG AGAALQIPFA MQMAYRFNGI GVTQNVLYEN QKLIANQFNS AIGKIQDSLS STASALGKLQ NVVNQNAQAL N TLVKQLSS NFGAISSVLN DILSRLDPPE AEVQIDRLIT GRLQSLQTYV TQQLIRAAEI RASANLAATK MSECVLGQSK RV DFCGKGY HLMSFPQSAP HGVVFLHVTY VPAQEKNFTT APAICHDGKA HFPREGVFVS NGTHWFVTQR NFYEPQIITT DNT FVSGNC DVVIGIVNNT VYDPLQPELD SFKEELDKYF KNHTSPDVDL GDISGINASV VNIQKEIDRL NEVAKNLNES LIDL QELGK YEQGSGYIPE APRDGQAYVR KDGEWVLLST FLENLYFQGD YKDDDDKHHH HHHHHH

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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: 72.396492 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MHSSALLCCL VLLTGVRAQS TIEEQAKTFL DKFNHEAEDL FYQSSLASWN YNTNITEENV QNMNNAGDKW SAFLKEQSTL AQMYPLQEI QNLTVKLQLQ ALQQNGSSVL SEDKSKRLNT ILNTMSTIYS TGKVCNPDNP QECLLLEPGL NEIMANSLDY N ERLWAWES ...String:
MHSSALLCCL VLLTGVRAQS TIEEQAKTFL DKFNHEAEDL FYQSSLASWN YNTNITEENV QNMNNAGDKW SAFLKEQSTL AQMYPLQEI QNLTVKLQLQ ALQQNGSSVL SEDKSKRLNT ILNTMSTIYS TGKVCNPDNP QECLLLEPGL NEIMANSLDY N ERLWAWES WRSEVGKQLR PLYEEYVVLK NEMARANHYE DYGDYWRGDY EVNGVDGYDY SRGQLIEDVE HTFEEIKPLY EH LHAYVRA KLMNAYPSYI SPIGCLPAHL LGDMWGRFWT NLYSLTVPFG QKPNIDVTDA MVDQAWDAQR IFKEAEKFFV SVG LPNMTQ GFWENSMLTD PGNVQKAVCH PTAWDLGKGD FRILMCTKVT MDDFLTAHHE MGHIQYDMAY AAQPFLLRNG ANEG FHEAV GEIMSLSAAT PKHLKSIGLL SPDFQEDNET EINFLLKQAL TIVGTLPFTY MLEKWRWMVF KGEIPKDQWM KKWWE MKRE IVGVVEPVPH DETYCDPASL FHVSNDYSFI RYYTRTLYQF QFQEALCQAA KHEGPLHKCD ISNSTEAGQK LFNMLR LGK SEPWTLALEN VVGAKNMNVR PLLNYFEPLF TWLKDQNKNS FVGWSTDWSP YADHHHHHHH HH

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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: 7.5
Component:
ConcentrationFormulaName
20.0 mMTris-HClTrisTris-HClTris
200.0 mMNaClSodium chloridesodium Chloride
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.8 µm
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 50.2 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 91703

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