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- EMDB-46532: Cryo-EM structure of PGT145 R100aS Fab bound to HIV-1 BG505 DS-SO... -

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Entry
Database: EMDB / ID: EMD-46532
TitleCryo-EM structure of PGT145 R100aS Fab bound to HIV-1 BG505 DS-SOSIP.664 Env trimer
Map datasharpened map
Sample
  • Complex: PGT145 R100aS Fab with HIV-1 BG505 DS-SOSIP.664 Env trimer
    • Protein or peptide: HIV-1 BG505 DS-SOSIP gp120
    • Protein or peptide: BG505 DS-SOSIP glycoprotein gp41
    • Protein or peptide: PGT145 R100aS Heavy Chain
    • Protein or peptide: PGT145 Light Chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: PHOSPHATE ION
KeywordsHiV-1 / Vaccine / viral protein / Fab / antibody / glycan / V2-apex
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 / identical protein binding / 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)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.41 Å
AuthorsHodges S / Morano NC / Shapiro L / Kwong PD / Gorman J
Funding support United States, 1 items
OrganizationGrant numberCountry
Other governmentZ01 BK 05021-01 LDV United States
CitationJournal: Cell Rep / Year: 2025
Title: Structural development of the HIV-1 apex-directed PGT145-PGDM1400 antibody lineage.
Authors: Rosemarie D Mason / Baoshan Zhang / Nicholas C Morano / Chen-Hsiang Shen / Krisha McKee / Ashley Heimann / Renguang Du / Alexandra F Nazzari / Shelby Hodges / Tapan Kanai / Bob C Lin / Mark ...Authors: Rosemarie D Mason / Baoshan Zhang / Nicholas C Morano / Chen-Hsiang Shen / Krisha McKee / Ashley Heimann / Renguang Du / Alexandra F Nazzari / Shelby Hodges / Tapan Kanai / Bob C Lin / Mark K Louder / Nicole A Doria-Rose / Tongqing Zhou / Lawrence Shapiro / Mario Roederer / Peter D Kwong / Jason Gorman /
Abstract: Broadly neutralizing antibodies (bNAbs) targeting the apex of the HIV-1-envelope (Env) trimer comprise the most potent category of HIV-1 bNAbs and have emerged as promising therapeutics. Here, we ...Broadly neutralizing antibodies (bNAbs) targeting the apex of the HIV-1-envelope (Env) trimer comprise the most potent category of HIV-1 bNAbs and have emerged as promising therapeutics. Here, we investigate the development of the HIV-1 apex-directed PGT145-PGDM1400 antibody lineage and report cryo-EM structures at 3.4 Å resolution of PGDM1400 and of an improved PGT145 variant (PGT145-R100aS), each bound to the BG505 Env trimer. Cross-species-based engineering improves PGT145 IC breadth to near that of PGDM1400. Despite similar breadth and potency, the two antibodies differ in their residue-level interactions with important apex features, including N160 glycans and apex cavity, with residue 100i of PGT145 (sulfated tyrosine) penetrating ∼7 Å farther than residue 100i of PGDM1400 (aspartic acid). While apex-directed bNAbs from other donors use maturation pathways that often converge on analogous residue-level recognition, our results demonstrate that divergent residue-level recognition can occur within the same lineage, thereby enabling improved coverage of escape variants.
History
DepositionAug 9, 2024-
Header (metadata) releaseDec 25, 2024-
Map releaseDec 25, 2024-
UpdateFeb 5, 2025-
Current statusFeb 5, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_46532.png

Downloads & links

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Map

FileDownload / File: emd_46532.map.gz / Format: CCP4 / Size: 282.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationsharpened map
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 420 pix.
= 348.6 Å		0.83 Å/pix.
x 420 pix.
= 348.6 Å		0.83 Å/pix.
x 420 pix.
= 348.6 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.83 Å
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Histogram (log scale)
Contour LevelBy AUTHOR: 0.12
Minimum - Maximum-0.5841212 - 1.1152772
Average (Standard dev.)0.0008723236 (±0.025552426)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions420420420
Spacing420420420
CellA=B=C: 348.6 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_46532_msk_1.map
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Additional map: resolve map

Fileemd_46532_additional_1.map
Annotationresolve map
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Additional map: unsharpened map

Fileemd_46532_additional_2.map
Annotationunsharpened map
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Half map: half map B

Fileemd_46532_half_map_1.map
Annotationhalf map B
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Half map: half map A

Fileemd_46532_half_map_2.map
Annotationhalf map A
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Sample components

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Entire : PGT145 R100aS Fab with HIV-1 BG505 DS-SOSIP.664 Env trimer

EntireName: PGT145 R100aS Fab with HIV-1 BG505 DS-SOSIP.664 Env trimer
Components
  • Complex: PGT145 R100aS Fab with HIV-1 BG505 DS-SOSIP.664 Env trimer
    • Protein or peptide: HIV-1 BG505 DS-SOSIP gp120
    • Protein or peptide: BG505 DS-SOSIP glycoprotein gp41
    • Protein or peptide: PGT145 R100aS Heavy Chain
    • Protein or peptide: PGT145 Light Chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
  • Ligand: PHOSPHATE ION

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Supramolecule #1: PGT145 R100aS Fab with HIV-1 BG505 DS-SOSIP.664 Env trimer

SupramoleculeName: PGT145 R100aS Fab with HIV-1 BG505 DS-SOSIP.664 Env trimer
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Human immunodeficiency virus 1

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Macromolecule #1: HIV-1 BG505 DS-SOSIP gp120

MacromoleculeName: HIV-1 BG505 DS-SOSIP gp120 / type: protein_or_peptide / ID: 1 / 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

UniProtKB: Envelope glycoprotein gp160

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Macromolecule #2: BG505 DS-SOSIP glycoprotein gp41

MacromoleculeName: BG505 DS-SOSIP glycoprotein gp41 / type: protein_or_peptide / ID: 2 / 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

UniProtKB: Envelope glycoprotein gp160

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Macromolecule #3: PGT145 R100aS Heavy Chain

MacromoleculeName: PGT145 R100aS Heavy Chain / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 26.32324 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QVQLVQSGAE VKKPGSSVKV SCKASGNSFS NHDVHWVRQA TGQGLEWMGW MSHEGDKTGL AQKFQGRVTI TRDSGASTVY MELRGLTAD DTAIYYCLTG SKHRLSDYFL (TYS)NE(TYS)GPNYEE WGDYLATLDV WGHGTAVTVS SASTKGPSVF PLA PSSKST ...String:
QVQLVQSGAE VKKPGSSVKV SCKASGNSFS NHDVHWVRQA TGQGLEWMGW MSHEGDKTGL AQKFQGRVTI TRDSGASTVY MELRGLTAD DTAIYYCLTG SKHRLSDYFL (TYS)NE(TYS)GPNYEE WGDYLATLDV WGHGTAVTVS SASTKGPSVF PLA PSSKST SGGTAALGCL VKDYFPEPVT VSWNSGALTS GVHTFPAVLQ SSGLYSLSSV VTVPSSSLGT QTYICNVNHK PSNT KVDKK VEPKSCD

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Macromolecule #4: PGT145 Light Chain

MacromoleculeName: PGT145 Light Chain / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.95375 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: EVVITQSPLF LPVTPGEAAS LSCKCSHSLQ HSTGANYLAW YLQRPGQTPR LLIHLATHRA SGVPDRFSGS GSGTDFTLKI SRVESDDVG TYYCMQGLHS PWTFGQGTKV EIKRTVAAPS VFIFPPSDEQ LKSGTASVVC LLNNFYPREA KVQWKVDNAL Q SGNSQESV ...String:
EVVITQSPLF LPVTPGEAAS LSCKCSHSLQ HSTGANYLAW YLQRPGQTPR LLIHLATHRA SGVPDRFSGS GSGTDFTLKI SRVESDDVG TYYCMQGLHS PWTFGQGTKV EIKRTVAAPS VFIFPPSDEQ LKSGTASVVC LLNNFYPREA KVQWKVDNAL Q SGNSQESV TEQDSKDSTY SLSSTLTLSK ADYEKHKVYA CEVTHQGLSS PVTKSFNRGE C

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Macromolecule #12: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 12 / Number of copies: 24 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

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

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Macromolecule #13: PHOSPHATE ION

MacromoleculeName: PHOSPHATE ION / type: ligand / ID: 13 / Number of copies: 1 / Formula: PO4
Molecular weightTheoretical: 94.971 Da
Chemical component information

ChemComp-PO4:
PHOSPHATE ION

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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

Concentration4 mg/mL
BufferpH: 7.4 / Details: PBS
GridModel: C-flat-1.2/1.3 / Material: COPPER / Support film - Material: CARBON / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Average exposure time: 2.5 sec. / Average electron dose: 58.06 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

9d1w

Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 3.41 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 111484
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC

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Atomic model buiding 1

RefinementProtocol: FLEXIBLE FIT
Output model

PDB-9d3d:
Cryo-EM structure of PGT145 R100aS Fab bound to HIV-1 BG505 DS-SOSIP.664 Env trimer

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