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- PDB-8c8t: cryo-EM structure of BG505 SOSIP.664 HIV-1 Env trimer in complex ... -

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Basic information

Entry
Database: PDB / ID: 8c8t
Titlecryo-EM structure of BG505 SOSIP.664 HIV-1 Env trimer in complex with bNAbs EPTC112 and 3BNC117
Components
  • (IgG 3BNC117 Fab ...) x 2
  • (IgG EPTC112 Fab ...) x 2
  • Envelope glycoprotein gp160
  • Gp41 Bg505 T332n Sosip.664
KeywordsIMMUNE SYSTEM / HIV / post-treatment controller / broadly neutralizing antibodies / V3-site
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 / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / 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 ...positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / 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 / apoptotic process / host cell plasma membrane / structural molecule activity / virion membrane / 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
Similarity search - Component
Biological speciesHuman immunodeficiency virus 1
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsBaquero, E. / Molinos-Albert, L. / Mouquet, H.
Funding support France, United States, 3items
OrganizationGrant numberCountry
Agence Nationale de Recherches Sur le Sida et les Hepatites Virales (ANRS)(AO2013-2 #13553 France
Agence Nationale de la Recherche (ANR)ANR-10-LABX-69-01 France
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)P01AI131365 United States
CitationJournal: Cell Host Microbe / Year: 2023
Title: Anti-V1/V3-glycan broadly HIV-1 neutralizing antibodies in a post-treatment controller.
Authors: Luis M Molinos-Albert / Eduard Baquero / Mélanie Bouvin-Pley / Valérie Lorin / Caroline Charre / Cyril Planchais / Jordan D Dimitrov / Valérie Monceaux / Matthijn Vos / / Laurent ...Authors: Luis M Molinos-Albert / Eduard Baquero / Mélanie Bouvin-Pley / Valérie Lorin / Caroline Charre / Cyril Planchais / Jordan D Dimitrov / Valérie Monceaux / Matthijn Vos / / Laurent Hocqueloux / Jean-Luc Berger / Michael S Seaman / Martine Braibant / Véronique Avettand-Fenoël / Asier Sáez-Cirión / Hugo Mouquet /
Abstract: HIV-1 broadly neutralizing antibodies (bNAbs) can decrease viremia but are usually unable to counteract autologous viruses escaping the antibody pressure. Nonetheless, bNAbs may contribute to natural ...HIV-1 broadly neutralizing antibodies (bNAbs) can decrease viremia but are usually unable to counteract autologous viruses escaping the antibody pressure. Nonetheless, bNAbs may contribute to natural HIV-1 control in individuals off antiretroviral therapy (ART). Here, we describe a bNAb B cell lineage elicited in a post-treatment controller (PTC) that exhibits broad seroneutralization and show that a representative antibody from this lineage, EPTC112, targets a quaternary epitope in the glycan-V3 loop supersite of the HIV-1 envelope glycoprotein. The cryo-EM structure of EPTC112 complexed with soluble BG505 SOSIP.664 envelope trimers revealed interactions with N301- and N156-branched N-glycans and the GDIR V3 loop motif. Although the sole contemporaneous virus circulating in this PTC was resistant to EPTC112, it was potently neutralized by autologous plasma IgG antibodies. Our findings illuminate how cross-neutralizing antibodies can alter the HIV-1 infection course in PTCs and may control viremia off-ART, supporting their role in functional HIV-1 cure strategies.
History
DepositionJan 21, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 5, 2023Provider: repository / Type: Initial release
Revision 1.1Jul 19, 2023Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Aug 23, 2023Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / citation / Item: _citation.journal_volume / _citation.page_first

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Envelope glycoprotein gp160
B: Gp41 Bg505 T332n Sosip.664
C: IgG EPTC112 Fab fragment heavy chain
F: Envelope glycoprotein gp160
G: Envelope glycoprotein gp160
H: IgG EPTC112 Fab fragment heavy chain
I: Gp41 Bg505 T332n Sosip.664
J: Gp41 Bg505 T332n Sosip.664
R: IgG 3BNC117 Fab heavy chain
S: IgG 3BNC117 Fab heavy chain
T: IgG 3BNC117 Fab Light Chain
U: IgG 3BNC117 Fab Light Chain
D: IgG EPTC112 Fab Light Chain
K: IgG EPTC112 Fab Light Chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)410,17752
Polymers398,27814
Non-polymers11,89938
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 2 types, 6 molecules AFGBIJ

#1: Protein Envelope glycoprotein gp160 / Env polyprotein


Mass: 52551.500 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Details: Gp120 Bg505 Sosip.664 T332n / Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Cell line (production host): HEK293 / Production host: Homo sapiens (human) / References: UniProt: Q2N0S5
#2: Protein Gp41 Bg505 T332n Sosip.664


Mass: 16431.627 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Cell line (production host): HEK293 / Production host: Homo sapiens (human)

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Antibody , 4 types, 8 molecules CHRSTUDK

#3: Antibody IgG EPTC112 Fab fragment heavy chain


Mass: 25320.389 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human)
#4: Antibody IgG 3BNC117 Fab heavy chain


Mass: 24640.484 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human)
#5: Antibody IgG 3BNC117 Fab Light Chain


Mass: 23022.658 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human)
#6: Antibody IgG EPTC112 Fab Light Chain


Mass: 22680.932 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human)

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Sugars , 4 types, 38 molecules

#7: Polysaccharide
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 11
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#8: Polysaccharide beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 586.542 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}LINUCSPDB-CARE
#9: Polysaccharide alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 748.682 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/3,4,3/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3/a4-b1_b4-c1_c3-d1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}}}}LINUCSPDB-CARE
#10: Sugar...
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 24 / Source method: obtained synthetically / Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Details

Has ligand of interestN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Ternary complex of Bg505 Sosip.664 HIV-1 Env with bNAbs EPTC112 and 3BNC117
Type: COMPLEX / Entity ID: #1-#6 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human) / Cell: HEK293
Buffer solutionpH: 7.5 / Details: PBS
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid type: EMS Lacey Carbon
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

Software
NameVersionClassification
phenix.real_space_refine1.19.2_4158refinement
PHENIX1.19.2_4158refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 251591 / Symmetry type: POINT
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 55.04 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.002920188
ELECTRON MICROSCOPYf_angle_d0.584427501
ELECTRON MICROSCOPYf_chiral_restr0.04953287
ELECTRON MICROSCOPYf_plane_restr0.00563424
ELECTRON MICROSCOPYf_dihedral_angle_d5.71523009

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