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- EMDB-20642: HIV-1 B41 SOSIP.664 in complex with rabbit antibody 13B -

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Basic information

Entry
Database: EMDB / ID: EMD-20642
TitleHIV-1 B41 SOSIP.664 in complex with rabbit antibody 13B
Map datasharpened map
Sample
  • Complex: HIV-1 B41 SOSIP.664 in complex with rabbit antibody 13B
    • Complex: HIV-1 B41 SOSIP.664
      • Protein or peptide: SOSIP.664 gp120,SOSIP.664 gp120
      • Protein or peptide: SOSIP.664 gp41
    • Complex: rabbit antibody 13B
      • Protein or peptide: rabbit antibody 13B Fragment antigen binding light chain
      • Protein or peptide: rabbit antibody 13B Fragment antigen binding heavy chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsHIV-1 / rabbit antibody / SOSIP / VIRAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


symbiont-mediated perturbation of host defense response / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell ...symbiont-mediated perturbation of host defense response / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell plasma membrane / virion membrane / structural molecule activity / 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 / Envelope glycoprotein gp160
Similarity search - Component
Biological speciesHuman immunodeficiency virus 1 / Oryctolagus cuniculus (rabbit)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.86 Å
AuthorsYang YR / Ward AB
Funding support United States, 3 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)UM1AI100663 United States
Bill & Melinda Gates FoundationOPP1115782 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)P01 AI110657 United States
CitationJournal: J Virol / Year: 2020
Title: Autologous Antibody Responses to an HIV Envelope Glycan Hole Are Not Easily Broadened in Rabbits.
Authors: Yuhe R Yang / Laura E McCoy / Marit J van Gils / Raiees Andrabi / Hannah L Turner / Meng Yuan / Christopher A Cottrell / Gabriel Ozorowski / James Voss / Matthias Pauthner / Thomas M ...Authors: Yuhe R Yang / Laura E McCoy / Marit J van Gils / Raiees Andrabi / Hannah L Turner / Meng Yuan / Christopher A Cottrell / Gabriel Ozorowski / James Voss / Matthias Pauthner / Thomas M Polveroni / Terrence Messmer / Ian A Wilson / Rogier W Sanders / Dennis R Burton / Andrew B Ward /
Abstract: Extensive studies with subtype A BG505-derived HIV envelope glycoprotein (Env) immunogens have revealed that the dominant autologous neutralizing epitope in rabbits is located in an exposed region of ...Extensive studies with subtype A BG505-derived HIV envelope glycoprotein (Env) immunogens have revealed that the dominant autologous neutralizing epitope in rabbits is located in an exposed region of the heavily glycosylated trimer that lacks potential N-linked glycosylation sites at positions 230, 241, and 289. The Env derived from B41, a subtype B virus, shares a glycan hole centered on positions 230 and 289. To test whether broader neutralization to the common glycan hole can be achieved, we immunized rabbits with B41 SOSIP (gp120-gp41 disulfide [SOS] with an isoleucine-to-proline mutation [IP] in gp41) alone, as well as B41 and BG505 coimmunization. We isolated autologous neutralizing antibodies (nAbs) and described their structure in complex with the B41 Env. Our data suggest that distinct autologous nAb lineages are induced by BG505 and B41 immunogens, even when both were administered together. In contrast to previously described BG505 glycan hole antibodies, the B41-specific nAbs accommodate the >97% conserved N241 glycan, which is present in B41. Single-particle cryo-electron microscopy studies confirmed that B41- and BG505-specific nAbs bind to overlapping glycan hole epitopes. We then used our high-resolution data to guide mutations in the BG505 glycan hole epitope in an attempt to broaden the reactivity of a B41-specific nAb, but we recovered only partial binding. Our data demonstrate that the lack of cross-reactivity in glycan hole antibodies is due to amino acid differences within the epitope, and our attempts to rationally design cross-reactive trimers resulted in only limited success. Thus, even for the immunodominant glycan hole shared between BG505 and B41, the prospect of designing prime-boost immunogens remains difficult. A glycan hole is one of the most dominant autologous neutralizing epitopes targeted on BG505 and B41 SOSIP trimer-immunized rabbits. Our high-resolution cryo-electron microscopy (cryoEM) studies of B41 in complex with a B41-specific antibody complex elucidate the molecular basis of this strain-specific glycan hole response. We conclude that even for the immunodominant glycan hole shared between BG505 and B41, the prospect of designing prime-boost immunogens remains difficult.
History
DepositionAug 27, 2019-
Header (metadata) releaseOct 9, 2019-
Map releaseJan 29, 2020-
UpdateNov 6, 2024-
Current statusNov 6, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.53
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.53
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6u59
  • Surface level: 0.53
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_20642.png

Downloads & links

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Map

FileDownload / File: emd_20642.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationsharpened map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.15 Å/pix.
x 256 pix.
= 294.4 Å		1.15 Å/pix.
x 256 pix.
= 294.4 Å		1.15 Å/pix.
x 256 pix.
= 294.4 Å

Surface

Projections

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.15 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.53 / Movie #1: 0.53
Minimum - Maximum-1.5880682 - 2.699511
Average (Standard dev.)0.0048875147 (±0.095944844)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 294.4 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.151.151.15
M x/y/z256256256
origin x/y/z0.0000.0000.000
length x/y/z294.400294.400294.400
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-1.5882.7000.005

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Supplemental data

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Mask #1

Fileemd_20642_msk_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half map B

Fileemd_20642_half_map_1.map
Annotationhalf map B
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half map A

Fileemd_20642_half_map_2.map
Annotationhalf map A
Projections & Slices
AxesZYX

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Sample components

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Entire : HIV-1 B41 SOSIP.664 in complex with rabbit antibody 13B

EntireName: HIV-1 B41 SOSIP.664 in complex with rabbit antibody 13B
Components
  • Complex: HIV-1 B41 SOSIP.664 in complex with rabbit antibody 13B
    • Complex: HIV-1 B41 SOSIP.664
      • Protein or peptide: SOSIP.664 gp120,SOSIP.664 gp120
      • Protein or peptide: SOSIP.664 gp41
    • Complex: rabbit antibody 13B
      • Protein or peptide: rabbit antibody 13B Fragment antigen binding light chain
      • Protein or peptide: rabbit antibody 13B Fragment antigen binding heavy chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: HIV-1 B41 SOSIP.664 in complex with rabbit antibody 13B

SupramoleculeName: HIV-1 B41 SOSIP.664 in complex with rabbit antibody 13B
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Molecular weightTheoretical: 570 KDa

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Supramolecule #2: HIV-1 B41 SOSIP.664

SupramoleculeName: HIV-1 B41 SOSIP.664 / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#2
Source (natural)Organism: Human immunodeficiency virus 1 / Strain: B41

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Supramolecule #3: rabbit antibody 13B

SupramoleculeName: rabbit antibody 13B / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #3-#4
Source (natural)Organism: Oryctolagus cuniculus (rabbit)

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Macromolecule #1: SOSIP.664 gp120,SOSIP.664 gp120

MacromoleculeName: SOSIP.664 gp120,SOSIP.664 gp120 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 58.872902 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MDAMKRGLCC VLLLCGAVFV SPSQEIHARF RRGARAAKKW VTVYYGVPVW KEATTTLFCA SDAKAYDTEV HNVWATHACV PTDPNPQEI VLGNVTENFN MWKNNMVEQM HEDIISLWDQ SLKPCVKLTP LCVTLNCNNV NTNNTNNSTN ATISDWEKME T GEMKNCSF ...String:
MDAMKRGLCC VLLLCGAVFV SPSQEIHARF RRGARAAKKW VTVYYGVPVW KEATTTLFCA SDAKAYDTEV HNVWATHACV PTDPNPQEI VLGNVTENFN MWKNNMVEQM HEDIISLWDQ SLKPCVKLTP LCVTLNCNNV NTNNTNNSTN ATISDWEKME T GEMKNCSF NVTTSIRDKI KKEYALFYKL DVVPLENKNN INNTNITNYR LINCNTSVIT QACPKVSFEP IPIHYCAPAG FA ILKCNSK TFNGSGPCTN VSTVQCTHGI RPVVSTQLLL NGSLAEEEIV IRSENITDNA KTIIVQLNEA VEINCTRPNN NTR KSIHIG PGRAFYATGD IIGNIRQAHC NISKARWNET LGQIVAKLEE QFPNKTIIFN HSSGGDPEIV THSFNCGGEF FYCN TTPLF NSTWNNTRTD DYPTGGEQNI TLQCRIKQII NMWQGVGKAM YAPPIRGQIR CSSNITGLLL TRDGGRDQNG TETFR PGGG NMRDNWRSEL YKYKVVKIEP LGIAPTACKR RVVQRRRRRR

UniProtKB: Envelope glycoprotein gp160

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Macromolecule #2: SOSIP.664 gp41

MacromoleculeName: SOSIP.664 gp41 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1 / Strain: B41
Molecular weightTheoretical: 17.357824 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
AVGLGAFILG FLGAAGSTMG AASMALTVQA RLLLSGIVQQ QNNLLRAPEA QQHMLQLTVW GIKQLQARVL AVERYLRDQQ LLGIWGCSG KIICCTNVPW NDSWSNKTIN EIWDNMTWMQ WEKEIDNYTQ HIYTLLEVSQ IQQEKNEQEL LELD

UniProtKB: Envelope glycoprotein gp160

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Macromolecule #3: rabbit antibody 13B Fragment antigen binding light chain

MacromoleculeName: rabbit antibody 13B Fragment antigen binding light chain
type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Oryctolagus cuniculus (rabbit)
Molecular weightTheoretical: 11.977202 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
DIVMTQTPAS VSEPVGGTVT INCQASQSRG NNYLSWYQQK PGQSPSLLIY RTSTLASGVP SRFKGSGSGT QFTLTISDLE CADAATYYC LYGYYSSRNP DFAFGGGTEV VVK

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Macromolecule #4: rabbit antibody 13B Fragment antigen binding heavy chain

MacromoleculeName: rabbit antibody 13B Fragment antigen binding heavy chain
type: protein_or_peptide / ID: 4 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Oryctolagus cuniculus (rabbit)
Molecular weightTheoretical: 12.790192 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
LEESGGGLVQ PEGSLTLTCK ASGFDFSDYH VQWVRQSPGK GLEFIGGIAY TGNIYYASWA KGRFTISKTS STTVTLQMTT LTAADTATY FCARAYGYAS APYAQYFNLW GPGTLVTVSS

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Macromolecule #8: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 8 / Number of copies: 30 / 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

Concentration5 mg/mL
BufferpH: 7.4
Component:
ConcentrationNameFormula
50.0 mMTris
150.0 mMsodium chlorideNaCl
0.06 mMn-Dodecyl B-D-maltoside

Details: Detergent was added to sample shortly prior to freezing.
GridModel: C-flat-2/2 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 10 sec. / Pretreatment - Atmosphere: OTHER
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TALOS ARCTICA
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Number grids imaged: 1 / Number real images: 1721 / Average exposure time: 14.0 sec. / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.5 µm / Nominal magnification: 36000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company

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Image processing

Startup modelType of model: EMDB MAP
EMDB ID:

8714

Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C3 (3 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 3.86 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 2) / Number images used: 147520
Initial angle assignmentType: OTHER / Software - Name: cryoSPARC (ver. 2)
Final angle assignmentType: OTHER / Software - Name: cryoSPARC (ver. 2)
Final 3D classificationNumber classes: 6 / Avg.num./class: 26000 / Software - Name: cryoSPARC (ver. 2) / Details: Heterogenous refinement
FSC plot (resolution estimation)

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Atomic model buiding 1

RefinementSpace: REAL
Output model

PDB-6u59:
HIV-1 B41 SOSIP.664 in complex with rabbit antibody 13B

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