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- EMDB-23519: Cryo-EM map of DH898.1 Fab-dimer bound near the CD4 binding site ... -

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Basic information

Entry
Database: EMDB / ID: EMD-23519
TitleCryo-EM map of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer
Map dataCryo-EM map of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer
Sample
  • Complex: Cryo-EM structure of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer.
    • Protein or peptide: CH848 SOSIP gp120
    • Protein or peptide: Env polyprotein
    • Protein or peptide: DH898.1 light chain
    • Protein or peptide: DH898.1 heavy chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
Function / homology
Function and homology information


positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / viral process / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / membrane => GO:0016020 / viral protein processing / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response ...positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / viral process / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / membrane => GO:0016020 / viral protein processing / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell plasma membrane / virion membrane / structural molecule activity / plasma membrane
Similarity search - Function
Envelope glycoprotein Gp160 / Retroviral envelope protein / Retroviral envelope protein GP41-like / Gp120 core superfamily / Envelope glycoprotein GP120 / Human immunodeficiency virus 1, envelope glycoprotein Gp120
Similarity search - Domain/homology
Envelope glycoprotein gp160 / Env polyprotein
Similarity search - Component
Biological speciesHuman immunodeficiency virus 1 / Simian-Human immunodeficiency virus / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.7 Å
AuthorsEdwards RJ / Manne K / Acharya P
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI145687 United States
Citation
Journal: Cell / Year: 2021
Title: Fab-dimerized glycan-reactive antibodies are a structural category of natural antibodies.
Authors: Wilton B Williams / R Ryan Meyerhoff / R J Edwards / Hui Li / Kartik Manne / Nathan I Nicely / Rory Henderson / Ye Zhou / Katarzyna Janowska / Katayoun Mansouri / Sophie Gobeil / Tyler ...Authors: Wilton B Williams / R Ryan Meyerhoff / R J Edwards / Hui Li / Kartik Manne / Nathan I Nicely / Rory Henderson / Ye Zhou / Katarzyna Janowska / Katayoun Mansouri / Sophie Gobeil / Tyler Evangelous / Bhavna Hora / Madison Berry / A Yousef Abuahmad / Jordan Sprenz / Margaret Deyton / Victoria Stalls / Megan Kopp / Allen L Hsu / Mario J Borgnia / Guillaume B E Stewart-Jones / Matthew S Lee / Naomi Bronkema / M Anthony Moody / Kevin Wiehe / Todd Bradley / S Munir Alam / Robert J Parks / Andrew Foulger / Thomas Oguin / Gregory D Sempowski / Mattia Bonsignori / Celia C LaBranche / David C Montefiori / Michael Seaman / Sampa Santra / John Perfect / Joseph R Francica / Geoffrey M Lynn / Baptiste Aussedat / William E Walkowicz / Richard Laga / Garnett Kelsoe / Kevin O Saunders / Daniela Fera / Peter D Kwong / Robert A Seder / Alberto Bartesaghi / George M Shaw / Priyamvada Acharya / Barton F Haynes /
Abstract: Natural antibodies (Abs) can target host glycans on the surface of pathogens. We studied the evolution of glycan-reactive B cells of rhesus macaques and humans using glycosylated HIV-1 envelope (Env) ...Natural antibodies (Abs) can target host glycans on the surface of pathogens. We studied the evolution of glycan-reactive B cells of rhesus macaques and humans using glycosylated HIV-1 envelope (Env) as a model antigen. 2G12 is a broadly neutralizing Ab (bnAb) that targets a conserved glycan patch on Env of geographically diverse HIV-1 strains using a unique heavy-chain (V) domain-swapped architecture that results in fragment antigen-binding (Fab) dimerization. Here, we describe HIV-1 Env Fab-dimerized glycan (FDG)-reactive bnAbs without V-swapped domains from simian-human immunodeficiency virus (SHIV)-infected macaques. FDG Abs also recognized cell-surface glycans on diverse pathogens, including yeast and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike. FDG precursors were expanded by glycan-bearing immunogens in macaques and were abundant in HIV-1-naive humans. Moreover, FDG precursors were predominately mutated IgMIgDCD27, thus suggesting that they originated from a pool of antigen-experienced IgM or marginal zone B cells.
#1: Journal: bioRxiv / Year: 2020
Title: Fab-dimerized glycan-reactive antibodies neutralize HIV and are prevalent in humans and rhesus macaques
Authors: Acharya P / Williams W / Henderson R / Janowska K / Manne K / Parks R / Deyton M / Sprenz J / Stalls V / Kopp M / Mansouri K / Edwards RJ / Meyerhoff RR / Oguin T / Sempowski G / Saunders K / Haynes BF
History
DepositionFeb 21, 2021-
Header (metadata) releaseMar 17, 2021-
Map releaseMar 17, 2021-
UpdateJun 9, 2021-
Current statusJun 9, 2021Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.816
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by cylindrical radius
  • Surface level: 0.816
  • Imaged by UCSF Chimera
  • Download
  • Surface view with fitted model
  • Atomic models: PDB-7lua
  • Surface level: 0.816
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_23519.png

Downloads & links

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Map

FileDownload / File: emd_23519.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCryo-EM map of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer
Voxel sizeX=Y=Z: 1.0665 Å
Density
Contour LevelBy AUTHOR: 0.816 / Movie #1: 0.816
Minimum - Maximum-0.5400671 - 1.9104918
Average (Standard dev.)0.026924657 (±0.11468069)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 273.02298 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.066496093751.066496093751.06649609375
M x/y/z256256256
origin x/y/z0.0000.0000.000
length x/y/z273.023273.023273.023
α/β/γ90.00090.00090.000
start NX/NY/NZ1219875
NX/NY/NZ141223232
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-0.5401.9100.027

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Supplemental data

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Half map: Cryo-EM map of DH898.1 Fab-dimer bound near the...

Fileemd_23519_half_map_1.map
AnnotationCryo-EM map of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Cryo-EM half-map B of DH898.1 Fab-dimer bound near...

Fileemd_23519_half_map_2.map
AnnotationCryo-EM half-map B of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Cryo-EM structure of DH898.1 Fab-dimer bound near the CD4 binding...

EntireName: Cryo-EM structure of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer.
Components
  • Complex: Cryo-EM structure of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer.
    • Protein or peptide: CH848 SOSIP gp120
    • Protein or peptide: Env polyprotein
    • Protein or peptide: DH898.1 light chain
    • Protein or peptide: DH898.1 heavy chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: Cryo-EM structure of DH898.1 Fab-dimer bound near the CD4 binding...

SupramoleculeName: Cryo-EM structure of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer.
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Human immunodeficiency virus 1

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Macromolecule #1: CH848 SOSIP gp120

MacromoleculeName: CH848 SOSIP gp120 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 52.06193 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: AENLWVTVYY GVPVWKEAKT TLFCASDARA YEKEVHNVWA THACVPTDPS PQELVLGNVT ENFNMWKNDM VDQMHEDIIS LWDQSLKPC VKLTPLCVTL ICSNATVKNG TVEEMKNCSF NTTTEIRDKE KKEYALFYKP DIVPLSETNN TSEYRLINCN T SACTQACP ...String:
AENLWVTVYY GVPVWKEAKT TLFCASDARA YEKEVHNVWA THACVPTDPS PQELVLGNVT ENFNMWKNDM VDQMHEDIIS LWDQSLKPC VKLTPLCVTL ICSNATVKNG TVEEMKNCSF NTTTEIRDKE KKEYALFYKP DIVPLSETNN TSEYRLINCN T SACTQACP KVTFEPIPIH YCAPAGYAIL KCNDETFNGT GPCSNVSTVQ CTHGIRPVVS TQLLLNGSLA EKEIVIRSEN LT NNAKIII VHLHTPVEIV CTRPNNNTRK SVRIGPGQTF YATGDIIGDI KQAHCNISEE KWNDTLQKVG IELQKHFPNK TIK YNQSAG GDMEITTHSF NCGGEFFYCN TSNLFNGTYN GTYISTNSSA NSTSTITLQC RIKQIINMWQ GVGRCMYAPP IAGN ITCRS NITGLLLTRD GGTNSNETET FRPAGGDMRD NWRSELYKYK VVKIEPLGVA PTRCKRRVVG R

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Macromolecule #2: Env polyprotein

MacromoleculeName: Env polyprotein / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Simian-Human immunodeficiency virus
Molecular weightTheoretical: 16.578803 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
FLGFLGAAGS TMGAASMTLT VQARNLLSGI VQQQSNLLRA PEAQQHLLKL TVWGIKQLQA RVLAVERYLR DQQLLGIWGC SGKLICCTN VPWNSSWSNR NLSEIWDNMT WLQWDKEISN YTQIIYGLLE ESQNQQEKNE QDLLALD

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Macromolecule #3: DH898.1 light chain

MacromoleculeName: DH898.1 light chain / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.55325 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: EIVMTQTPLS LSVTPGEPAS LSCRSSASLL HGNGNTYLHW YLRKAGQSPQ LLIFGGSKRV PGISDRFIGS GAGTNFTLKI SSVEADDVG FYYCAQGVAF PWTFGQGTKV EIKRAVAAPS VFIFPPSEDQ VKSGTVSVVC LLNNFYPREA SVKWKVDGVL K TGNSQESV ...String:
EIVMTQTPLS LSVTPGEPAS LSCRSSASLL HGNGNTYLHW YLRKAGQSPQ LLIFGGSKRV PGISDRFIGS GAGTNFTLKI SSVEADDVG FYYCAQGVAF PWTFGQGTKV EIKRAVAAPS VFIFPPSEDQ VKSGTVSVVC LLNNFYPREA SVKWKVDGVL K TGNSQESV TEQDSKDNTY SLSSTLTLSN TDYQSHNVYA CEVTHQGLSS PVTKSFNRGE

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Macromolecule #4: DH898.1 heavy chain

MacromoleculeName: DH898.1 heavy chain / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.596594 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QDLLLQSGAE VREPGASVTV SCQASNYTFP DYYIHWVRLV PGQGLEWLGE MKPKVGVTNV SKKIRDRLFM TADTSTDTAY MVLSALTPG DTAIYYCTRL EPDFLSGWAH WGKGVLVTVS PASTKGPSVF PLAPSSRSTS ESTAALGCLV KDYFPEPVTV S WNSGSLTS ...String:
QDLLLQSGAE VREPGASVTV SCQASNYTFP DYYIHWVRLV PGQGLEWLGE MKPKVGVTNV SKKIRDRLFM TADTSTDTAY MVLSALTPG DTAIYYCTRL EPDFLSGWAH WGKGVLVTVS PASTKGPSVF PLAPSSRSTS ESTAALGCLV KDYFPEPVTV S WNSGSLTS GVHTFPAVLQ SSGLYSLSSV VTVPSSSLGT QTYVCNVNHK PSNTKVDKRV E

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Macromolecule #9: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 9 / Number of copies: 17 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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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
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Atmosphere: AIR
VitrificationCryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 293 K / Instrument: LEICA EM GP / Details: blot for 2.5 seconds before plunging.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
TemperatureMin: 93.15 K / Max: 93.15 K
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number real images: 3230 / Average electron dose: 62.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: cryoSPARC
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.7 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 59012
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC
Final 3D classificationSoftware - Name: cryoSPARC

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Atomic model buiding 1

RefinementProtocol: AB INITIO MODEL
Output model

PDB-7lua:
Cryo-EM structure of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer

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