National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
P01 AI100148
United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
P50 GM082545-06
United States
Citation
Journal: Immunity / Year: 2019 Title: Broad and Potent Neutralizing Antibodies Recognize the Silent Face of the HIV Envelope. Authors: Till Schoofs / Christopher O Barnes / Nina Suh-Toma / Jovana Golijanin / Philipp Schommers / Henning Gruell / Anthony P West / Franziska Bach / Yu Erica Lee / Lilian Nogueira / Ivelin S ...Authors: Till Schoofs / Christopher O Barnes / Nina Suh-Toma / Jovana Golijanin / Philipp Schommers / Henning Gruell / Anthony P West / Franziska Bach / Yu Erica Lee / Lilian Nogueira / Ivelin S Georgiev / Robert T Bailer / Julie Czartoski / John R Mascola / Michael S Seaman / M Juliana McElrath / Nicole A Doria-Rose / Florian Klein / Michel C Nussenzweig / Pamela J Bjorkman / Abstract: Broadly neutralizing antibodies (bNAbs) against HIV-1 envelope (Env) inform vaccine design and are potential therapeutic agents. We identified SF12 and related bNAbs with up to 62% neutralization ...Broadly neutralizing antibodies (bNAbs) against HIV-1 envelope (Env) inform vaccine design and are potential therapeutic agents. We identified SF12 and related bNAbs with up to 62% neutralization breadth from an HIV-infected donor. SF12 recognized a glycan-dominated epitope on Env's silent face and was potent against clade AE viruses, which are poorly covered by V3-glycan bNAbs. A 3.3Å cryo-EM structure of a SF12-Env trimer complex showed additional contacts to Env protein residues by SF12 compared with VRC-PG05, the only other known donor-derived silentface antibody, explaining SF12's increased neutralization breadth, potency, and resistance to Env mutation routes. Asymmetric binding of SF12 was associated with distinct N-glycan conformations across Env protomers, demonstrating intra-Env glycan heterogeneity. Administrating SF12 to HIV-1-infected humanized mice suppressed viremia and selected for viruses lacking the N448 glycan. Effective bNAbs can therefore be raised against HIV-1 Env's silent face, suggesting their potential for HIV-1 prevention, therapy, and vaccine development.
History
Deposition
Apr 14, 2019
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Header (metadata) release
May 8, 2019
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Map release
Jun 5, 2019
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Update
Oct 16, 2024
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Current status
Oct 16, 2024
Processing site: RCSB / Status: Released
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Structure visualization
Movie
Surface view with section colored by density value
Entire : Complex of B41 SOSIP.664 trimer with three SF12 Fabs and one 10-1...
Entire
Name: Complex of B41 SOSIP.664 trimer with three SF12 Fabs and one 10-1074 Fab
Components
Complex: Complex of B41 SOSIP.664 trimer with three SF12 Fabs and one 10-1074 Fab
Complex: B41 SOSIP.664 trimer
Protein or peptide: Envelope glycoprotein gp41
Protein or peptide: Envelope glycoprotein gp120
Complex: 10-1074 Fab
Protein or peptide: 10-1074 Heavy Chain,10-1074 Heavy Chain
Protein or peptide: 10-1074 Light Chain,10-1074 Light Chain
Complex: SF12 Fab
Protein or peptide: SF12 Heavy Chain,SF12 Heavy Chain
Protein or peptide: SF12 Light Chain,SF12 Light Chain
Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
+
Supramolecule #1: Complex of B41 SOSIP.664 trimer with three SF12 Fabs and one 10-1...
Supramolecule
Name: Complex of B41 SOSIP.664 trimer with three SF12 Fabs and one 10-1074 Fab type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6 Details: Fab fragment generated by recombinant expression and complexed with the B41 SOSIP.664 trimer
Model: Quantifoil R2/2 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Pretreatment - Atmosphere: AIR
Vitrification
Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 295 K / Instrument: FEI VITROBOT MARK IV Details: 0 blot force, 3 second blot time, 3 uL sample added to freshly glow-discharged grids.
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Electron microscopy
Microscope
FEI TITAN KRIOS
Image recording
Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Digitization - Frames/image: 1-40 / Number grids imaged: 1 / Number real images: 2732 / Average exposure time: 8.0 sec. / Average electron dose: 40.0 e/Å2
Electron beam
Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
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