[English] 日本語
Yorodumi
- EMDB-63514: Alpha SARS-CoV-2 spike protein RBD-down in complex with REGN10987... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: EMDB / ID: EMD-63514
TitleAlpha SARS-CoV-2 spike protein RBD-down in complex with REGN10987 Fab homologue (local refinement)
Map data
Sample
  • Complex: Alpha SARS-CoV-2 S-protein RBD-down + REGN10987 Fab homologue
    • Complex: REGN10987 Fab homologue
      • Protein or peptide: REGN10987 Fab homologue (Light chain)
      • Protein or peptide: REGN10987 Fab homologue (Heavy chain)
    • Organelle or cellular component: Alpha SARS-CoV-2 S-protein RBD-down
      • Protein or peptide: Spike glycoprotein
KeywordsVIRAL PROTEIN
Function / homology
Function and homology information


host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated virion attachment to host cell / endocytosis involved in viral entry into host cell / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / host cell plasma membrane / virion membrane / membrane
Similarity search - Function
Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / 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 ...Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2 / Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / 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
Biological speciesSevere acute respiratory syndrome coronavirus 2 / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.6 Å
AuthorsKocharovskaya MV / Pichkur EB / Shenkarev ZO / Lyukmanova EN
Funding support1 items
OrganizationGrant numberCountry
Not funded
CitationJournal: Biochem Biophys Res Commun / Year: 2025
Title: Structure and dynamics of Alpha B.1.1.7 SARS-CoV-2 S-protein in complex with Fab of neutralizing antibody REGN10987.
Authors: Milita V Kocharovskaya / Evgeny B Pichkur / Artem D Ivannikov / Daria D Kharlampieva / Ekaterina N Grafskaia / Ekaterina N Lyukmanova / Mikhail P Kirpichnikov / Zakhar O Shenkarev /
Abstract: One of the approaches for treatment of COVID-19 is a use of neutralizing antibodies (nAbs). The study of the mechanisms by which nAbs recognize different strains of SARS-CoV-2 may facilitate the ...One of the approaches for treatment of COVID-19 is a use of neutralizing antibodies (nAbs). The study of the mechanisms by which nAbs recognize different strains of SARS-CoV-2 may facilitate the development of new drugs and vaccines against the coronavirus infection. In this work, we present the 3.1 Å resolution cryo-electron microscopy structure of a full-length trimeric spike-protein (S-protein) of the SARS-CoV-2 Alpha (B.1.1.7) variant in complex with the Fab of the REGN10987 nAb. In the complex, two receptor-binding domains (RBDs) of the S-protein were observed in the 'up' state, whereas third RBD was in the 'down' state. This distinguishes the obtained structure from the complex of Delta (B.1.617.2) S-protein with REGN10987-Fab, where only one RBD was in the 'up' state. Probably some of the substituted residues (K478T, A570D, and S982A) located at the interprotomer interfaces are responsible for the greater Alpha S-protein opening upon the REGN10987-Fab binding. The Fab identically binds to the RBD in the both 'up' and 'down' conformations. The RBD-Fab interaction interface was refined to a resolution of 3.6 Å. The antibody binds to the receptor-binding motif (RBM), which prevents the S-protein from the binding to its receptor, angiotensin-converting enzyme 2 (ACE-2). Comparison with the structures of the Wuhan (wild type) and Delta RBD variants in complex with REGN10987-Fab revealed that the N501Y and T478K/L452R mutations presented in the RBM of the Alpha and Delta variants, respectively, do not affect the mode of the RBD-Fab interaction.
History
DepositionFeb 20, 2025-
Header (metadata) releaseApr 2, 2025-
Map releaseApr 2, 2025-
UpdateApr 2, 2025-
Current statusApr 2, 2025Processing site: PDBj / Status: Released

-
Structure visualization

Supplemental images

emd_63514.png

Downloads & links

-
Map

FileDownload / File: emd_63514.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.93 Å/pix.
x 384 pix.
= 357.12 Å		0.93 Å/pix.
x 384 pix.
= 357.12 Å		0.93 Å/pix.
x 384 pix.
= 357.12 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.93 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.19
Minimum - Maximum-0.75304556 - 1.5567322
Average (Standard dev.)-0.0013451672 (±0.022122188)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 357.12 Å
α=β=γ: 90.0 °

-
Supplemental data

-
Mask #1

Fileemd_63514_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Half map: #2

Fileemd_63514_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Half map: #1

Fileemd_63514_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Sample components

-
Entire : Alpha SARS-CoV-2 S-protein RBD-down + REGN10987 Fab homologue

EntireName: Alpha SARS-CoV-2 S-protein RBD-down + REGN10987 Fab homologue
Components
  • Complex: Alpha SARS-CoV-2 S-protein RBD-down + REGN10987 Fab homologue
    • Complex: REGN10987 Fab homologue
      • Protein or peptide: REGN10987 Fab homologue (Light chain)
      • Protein or peptide: REGN10987 Fab homologue (Heavy chain)
    • Organelle or cellular component: Alpha SARS-CoV-2 S-protein RBD-down
      • Protein or peptide: Spike glycoprotein

-
Supramolecule #1: Alpha SARS-CoV-2 S-protein RBD-down + REGN10987 Fab homologue

SupramoleculeName: Alpha SARS-CoV-2 S-protein RBD-down + REGN10987 Fab homologue
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #2-#3, #1
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2

-
Supramolecule #2: REGN10987 Fab homologue

SupramoleculeName: REGN10987 Fab homologue / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #2-#3
Source (natural)Organism: Homo sapiens (human)

-
Supramolecule #3: Alpha SARS-CoV-2 S-protein RBD-down

SupramoleculeName: Alpha SARS-CoV-2 S-protein RBD-down / type: organelle_or_cellular_component / ID: 3 / Parent: 1 / Macromolecule list: #1
Source (natural)Organism: Homo sapiens (human)

-
Macromolecule #1: Spike glycoprotein

MacromoleculeName: Spike glycoprotein / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Severe acute respiratory syndrome coronavirus 2
Molecular weightTheoretical: 21.821463 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: NLCPFGEVFN ATRFASVYAW NRKRISNCVA DYSVLYNSAS FSTFKCYGVS PTKLNDLCFT NVYADSFVIR GDEVRQIAPG QTGKIADYN YKLPDDFTGC VIAWNSNNLD SKVGGNYNYL YRLFRKSNLK PFERDISTEI YQAGSTPCNG VEGFNCYFPL Q SYGFQPTY ...String:
NLCPFGEVFN ATRFASVYAW NRKRISNCVA DYSVLYNSAS FSTFKCYGVS PTKLNDLCFT NVYADSFVIR GDEVRQIAPG QTGKIADYN YKLPDDFTGC VIAWNSNNLD SKVGGNYNYL YRLFRKSNLK PFERDISTEI YQAGSTPCNG VEGFNCYFPL Q SYGFQPTY GVGYQPYRVV VLSFELLHAP ATVCGP

UniProtKB: Spike glycoprotein

-
Macromolecule #2: REGN10987 Fab homologue (Light chain)

MacromoleculeName: REGN10987 Fab homologue (Light chain) / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.334691 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QSALTQPASV SGSPGQSITI SCTGTSSDVG GYNYVSWYQQ HPGKAPKLMI YDVSKRPSGV SNRFSGSKSG NTASLTISGL QSEDEADYY CNSLTSISTW VFGGGTKLTV LGRTVAAPSV FIFPPSDEQL KSGTASVVCL LNNFYPREAK VQWKVDNALQ S GNSQESVT ...String:
QSALTQPASV SGSPGQSITI SCTGTSSDVG GYNYVSWYQQ HPGKAPKLMI YDVSKRPSGV SNRFSGSKSG NTASLTISGL QSEDEADYY CNSLTSISTW VFGGGTKLTV LGRTVAAPSV FIFPPSDEQL KSGTASVVCL LNNFYPREAK VQWKVDNALQ S GNSQESVT EQDSKDSTYS LSSTLTLSKA DYEKHKVYAC EVTHQGLSSP VTKSFNRGEC

-
Macromolecule #3: REGN10987 Fab homologue (Heavy chain)

MacromoleculeName: REGN10987 Fab homologue (Heavy chain) / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.792617 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QVQLVESGGG VVQPGRSLRL SCAASGFTFS NYAMYWVRQA PGKGLEWVAV ISYDGSNKYY ADSVKGRFTI SRDNSKNTLY LQMNSLRTE DTAVYYCASG SDYGDYLLVY WGQGTLVTVS SASTKGPSVF PLAPSSKSTS GGTAALGCLV KDYFPEPVTV S WNSGALTS ...String:
QVQLVESGGG VVQPGRSLRL SCAASGFTFS NYAMYWVRQA PGKGLEWVAV ISYDGSNKYY ADSVKGRFTI SRDNSKNTLY LQMNSLRTE DTAVYYCASG SDYGDYLLVY WGQGTLVTVS SASTKGPSVF PLAPSSKSTS GGTAALGCLV KDYFPEPVTV S WNSGALTS GVHTFPAVLQ SSGLYSLSSV VTVPSSSLGT QTYICNVNHK PSNTKVDKKV EPKSC

-
Experimental details

-
Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

-
Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE

-
Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.6 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

+
Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

7zjl

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 34988
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more