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- EMDB-29209: Structure of Bispecific CAP256V2LS-J3 Fab in complex with BG505 D... -

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Basic information

Entry
Database: EMDB / ID: EMD-29209
TitleStructure of Bispecific CAP256V2LS-J3 Fab in complex with BG505 DS-SOSIP.664
Map dataSharpened map
Sample
  • Complex: CAP256V2LS-J3-3 Fab in complex with BG505 DS-SOSIP.664
    • Protein or peptide: Envelope glycoprotein gp41
    • Protein or peptide: Envelope glycoprotein gp120
    • Protein or peptide: J3-VRC26.25 Light
    • Protein or peptide: VRC26.25 Heavy
  • 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 / virus-mediated perturbation of host defense response / 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 ...positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / virus-mediated perturbation of host defense response / 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 / identical protein binding / 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 / Lama glama (llama) / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.18 Å
AuthorsGorman J / Kwong PD
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM103310 United States
Other privateSimons Foundation (SF349247)
CitationJournal: MAbs / Year: 2023
Title: Bispecific antibody CAP256.J3LS targets V2-apex and CD4-binding sites with high breadth and potency.
Authors: Baoshan Zhang / Jason Gorman / Young D Kwon / Amarendra Pegu / Cara W Chao / Tracy Liu / Mangaiarkarasi Asokan / Michael F Bender / Tatsiana Bylund / Leland Damron / Deepika Gollapudi / ...Authors: Baoshan Zhang / Jason Gorman / Young D Kwon / Amarendra Pegu / Cara W Chao / Tracy Liu / Mangaiarkarasi Asokan / Michael F Bender / Tatsiana Bylund / Leland Damron / Deepika Gollapudi / Paula Lei / Yile Li / Cuiping Liu / Mark K Louder / Krisha McKee / Adam S Olia / Reda Rawi / Arne Schön / Shuishu Wang / Eun Sung Yang / Yongping Yang / Kevin Carlton / Nicole A Doria-Rose / Lawrence Shapiro / Michael S Seaman / John R Mascola / Peter D Kwong /
Abstract: Antibody CAP256-VRC26.25 targets the second hypervariable region (V2) at the apex of the HIV envelope (Env) trimer with extraordinary neutralization potency, although less than optimal breadth. To ...Antibody CAP256-VRC26.25 targets the second hypervariable region (V2) at the apex of the HIV envelope (Env) trimer with extraordinary neutralization potency, although less than optimal breadth. To improve breadth, we linked the light chain of CAP256V2LS, an optimized version of CAP256-VRC26.25 currently under clinical evaluation, to the llama nanobody J3, which has broad CD4-binding site-directed neutralization. The J3-linked bispecific antibody exhibited improved breadth and potency over both J3 and CAP256V2LS, indicative of synergistic neutralization. The cryo-EM structure of the bispecific antibody in complex with a prefusion-closed Env trimer revealed simultaneous binding of J3 and CAP256V2LS. We further optimized the pharmacokinetics of the bispecific antibody by reducing the net positive charge of J3. The optimized bispecific antibody, which we named CAP256.J3LS, had a half-life similar to CAP256V2LS in human FcRn knock-in mice and exhibited suitable auto-reactivity, manufacturability, and biophysical risk. CAP256.J3LS neutralized over 97% of a multiclade 208-strain panel (geometric mean concentration for 80% inhibition (IC) 0.079 μg/ml) and 100% of a 100-virus clade C panel (geometric mean IC of 0.05 μg/ml), suggesting its anti-HIV utility especially in regions where clade C dominates.
History
DepositionDec 16, 2022-
Header (metadata) releaseFeb 1, 2023-
Map releaseFeb 1, 2023-
UpdateFeb 15, 2023-
Current statusFeb 15, 2023Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_29209.png

Downloads & links

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Map

FileDownload / File: emd_29209.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationSharpened map
Voxel sizeX=Y=Z: 1.083 Å
Density
Contour LevelBy AUTHOR: 0.2
Minimum - Maximum-1.3823595 - 2.950187
Average (Standard dev.)0.005220999 (±0.052862607)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 433.19998 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_29209_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
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Histogram

Histogram (log scale)

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Additional map: Unsharpened

Fileemd_29209_additional_1.map
AnnotationUnsharpened
Projections & Slices
AxesZYX

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Histogram

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Additional map: resolve density modified

Fileemd_29209_additional_2.map
Annotationresolve density modified
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Half map: Half map A

Fileemd_29209_half_map_1.map
AnnotationHalf map A
Projections & Slices
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Histogram

Histogram (log scale)

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Half map: Half map B

Fileemd_29209_half_map_2.map
AnnotationHalf map B
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Sample components

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Entire : CAP256V2LS-J3-3 Fab in complex with BG505 DS-SOSIP.664

EntireName: CAP256V2LS-J3-3 Fab in complex with BG505 DS-SOSIP.664
Components
  • Complex: CAP256V2LS-J3-3 Fab in complex with BG505 DS-SOSIP.664
    • Protein or peptide: Envelope glycoprotein gp41
    • Protein or peptide: Envelope glycoprotein gp120
    • Protein or peptide: J3-VRC26.25 Light
    • Protein or peptide: VRC26.25 Heavy
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: CAP256V2LS-J3-3 Fab in complex with BG505 DS-SOSIP.664

SupramoleculeName: CAP256V2LS-J3-3 Fab in complex with BG505 DS-SOSIP.664
type: complex / ID: 1 / Chimera: Yes / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Human immunodeficiency virus 1

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Macromolecule #1: Envelope glycoprotein gp41

MacromoleculeName: Envelope glycoprotein gp41 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 17.146482 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
AVGIGAVFLG FLGAAGSTMG AASMTLTVQA RNLLSGIVQQ QSNLLRAPEA QQHLLKLTVW GIKQLQARVL AVERYLRDQQ LLGIWGCSG KLICCTNVPW NSSWSNRNLS EIWDNMTWLQ WDKEISNYTQ IIYGLLEESQ NQQEKNEQDL LALD

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Macromolecule #2: Envelope glycoprotein gp120

MacromoleculeName: Envelope glycoprotein gp120 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 54.086324 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: AENLWVTVYY GVPVWKDAET TLFCASDAKA YETEKHNVWA THACVPTDPN PQEIHLENVT EEFNMWKNNM VEQMHTDIIS LWDQSLKPC VKLTPLCVTL QCTNVTNNIT DDMRGELKNC SFNMTTELRD KKQKVYSLFY RLDVVQINEN QGNRSNNSNK E YRLINCNT ...String:
AENLWVTVYY GVPVWKDAET TLFCASDAKA YETEKHNVWA THACVPTDPN PQEIHLENVT EEFNMWKNNM VEQMHTDIIS LWDQSLKPC VKLTPLCVTL QCTNVTNNIT DDMRGELKNC SFNMTTELRD KKQKVYSLFY RLDVVQINEN QGNRSNNSNK E YRLINCNT SACTQACPKV SFEPIPIHYC APAGFAILKC KDKKFNGTGP CPSVSTVQCT HGIKPVVSTQ LLLNGSLAEE EV MIRSENI TNNAKNILVQ FNTPVQINCT RPNNNTRKSI RIGPGQAFYA TGDIIGDIRQ AHCNVSKATW NETLGKVVKQ LRK HFGNNT IIRFANSSGG DLEVTTHSFN CGGEFFYCNT SGLFNSTWIS NTSVQGSNST GSNDSITLPC RIKQIINMWQ RIGQ CMYAP PIQGVIRCVS NITGLILTRD GGSTNSTTET FRPGGGDMRD NWRSELYKYK VVKIEPLGVA PTRCKRRVVG RRRRR R

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Macromolecule #3: J3-VRC26.25 Light

MacromoleculeName: J3-VRC26.25 Light / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Lama glama (llama)
Molecular weightTheoretical: 37.355211 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: EVQLVESGGG LVQAGGFLEL SCELRGSIFN QYAMAWFRQA PGKEREFVAG MGAVPHYGEF VKGRFTISRD NAKSTVYLQM SSLEPEDTA IYFCARSKST YISYNSNGYD YWGQGTQVTV SSGGSGGGGS GGGGSGGQSV LTQPPSVSAA PGQKVTISCS G NTSNIGNN ...String:
EVQLVESGGG LVQAGGFLEL SCELRGSIFN QYAMAWFRQA PGKEREFVAG MGAVPHYGEF VKGRFTISRD NAKSTVYLQM SSLEPEDTA IYFCARSKST YISYNSNGYD YWGQGTQVTV SSGGSGGGGS GGGGSGGQSV LTQPPSVSAA PGQKVTISCS G NTSNIGNN FVSWYQQRPG RAPQLLIYET DKRPSGIPDR FSASKSGTSG TLAITGLQTG DEADYYCATW AASLSSARVF GT GTQVIVL GQPKVNPTVT LFPPSSEELQ ANKATLVCLI SDFYPGAVTV AWKADSSPVK AGVETTTPSK QSNNKYAASS YLS LTPEQW KSHRSYSCQV THEGSTVEKT VAPTECS

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Macromolecule #4: VRC26.25 Heavy

MacromoleculeName: VRC26.25 Heavy / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 26.863039 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QVQLVESGGG VVQPGTSLRL SCAASQFRFD GYGMHWVRQA PGKGLEWVAS ISHDGIKKYH AEKVWGRFTI SRDNSKNTLY LQMNSLRPE DTALYYCAKD LREDECEEWW SD(TYS)(TYS)DFGAQL PCAKSRGGLV GIADNWGQGT MVTVSSASTK GPS VFPLAP ...String:
QVQLVESGGG VVQPGTSLRL SCAASQFRFD GYGMHWVRQA PGKGLEWVAS ISHDGIKKYH AEKVWGRFTI SRDNSKNTLY LQMNSLRPE DTALYYCAKD LREDECEEWW SD(TYS)(TYS)DFGAQL PCAKSRGGLV GIADNWGQGT MVTVSSASTK GPS VFPLAP SSKSTSGGTA ALGCLVKDYF PEPVTVSWNS GALTSGVHTF PAVLQSSGLY SLSSVVTVPS SSLGTQTYIC NVNH KPSNT KVDKKVEPKS

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Macromolecule #10: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 10 / Number of copies: 25 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose / N-Acetylglucosamine

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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

Concentration2 mg/mL
BufferpH: 7.4 / Details: PBS
GridModel: C-flat-1.2/1.3 / Support film - Material: CARBON / Support film - topology: HOLEY
VitrificationCryogen name: ETHANE / Chamber humidity: 90 % / Chamber temperature: 293 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.8 µm
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Detector mode: COUNTING / Number grids imaged: 1 / Average exposure time: 2.0 sec. / Average electron dose: 51.19 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: NOT APPLICABLE
Final 3D classificationSoftware - Name: cryoSPARC (ver. 3)
Final angle assignmentType: NOT APPLICABLE
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.18 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 3) / Number images used: 118472

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Atomic model buiding 1

Initial modelPDB ID:

6nnf

RefinementSpace: REAL / Protocol: FLEXIBLE FIT
Output model

PDB-8fis:
Structure of Bispecific CAP256V2LS-J3 Fab in complex with BG505 DS-SOSIP.664

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