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- EMDB-40288: CryoEM structure of DH270.I2-CH848.10.17 -

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Basic information

Entry
Database: EMDB / ID: EMD-40288
TitleCryoEM structure of DH270.I2-CH848.10.17
Map data
Sample
  • Complex: DH270.I2-CH848.10.17
    • Protein or peptide: CH848.10.17.SOSIP gp120
    • Protein or peptide: CH848.10.17.SOSIP gp41
    • Protein or peptide: DH270.I2.6 variable heavy chain
    • Protein or peptide: DH270.I2.6 variable light chain
KeywordsHIV-1 / antibody / DH270.I2 / CH848.10.17 / VIRAL PROTEIN-IMMUNE SYSTEM complex
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 speciesHomo sapiens (human) / HIV-1 06TG.HT008 (virus)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsHenderson R / Zhou Y / Stalls V / Bartesaghi B / Acharya P
Funding support United States, 3 items
OrganizationGrant numberCountry
National Science Foundation (NSF, United States)ECCS-2025064 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI144371 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI145687 United States
Citation
Journal: Nat Commun / Year: 2023
Title: Structural basis for breadth development in the HIV-1 V3-glycan targeting DH270 antibody clonal lineage.
Authors: Rory Henderson / Ye Zhou / Victoria Stalls / Kevin Wiehe / Kevin O Saunders / Kshitij Wagh / Kara Anasti / Maggie Barr / Robert Parks / S Munir Alam / Bette Korber / Barton F Haynes / ...Authors: Rory Henderson / Ye Zhou / Victoria Stalls / Kevin Wiehe / Kevin O Saunders / Kshitij Wagh / Kara Anasti / Maggie Barr / Robert Parks / S Munir Alam / Bette Korber / Barton F Haynes / Alberto Bartesaghi / Priyamvada Acharya /
Abstract: Antibody affinity maturation enables adaptive immune responses to a wide range of pathogens. In some individuals broadly neutralizing antibodies develop to recognize rapidly mutating pathogens with ...Antibody affinity maturation enables adaptive immune responses to a wide range of pathogens. In some individuals broadly neutralizing antibodies develop to recognize rapidly mutating pathogens with extensive sequence diversity. Vaccine design for pathogens such as HIV-1 and influenza has therefore focused on recapitulating the natural affinity maturation process. Here, we determine structures of antibodies in complex with HIV-1 Envelope for all observed members and ancestral states of the broadly neutralizing HIV-1 V3-glycan targeting DH270 antibody clonal B cell lineage. These structures track the development of neutralization breadth from the unmutated common ancestor and define affinity maturation at high spatial resolution. By elucidating contacts mediated by key mutations at different stages of antibody development we identified sites on the epitope-paratope interface that are the focus of affinity optimization. Thus, our results identify bottlenecks on the path to natural affinity maturation and reveal solutions for these that will inform immunogen design aimed at eliciting a broadly neutralizing immune response by vaccination.
#1: Journal: Biorxiv / Year: 2022
Title: Structural basis for breadth development in a HIV-1 neutralizing antibody
Authors: Henderson R / Zhou Y / Stalls V / Wiehe K / Saunders KO / Wagh K / Anasti K / Barr M / Parks R / Alam SM / Korber B / Haynes BF / Bartesaghi A / Acharya P
History
DepositionApr 2, 2023-
Header (metadata) releaseApr 19, 2023-
Map releaseApr 19, 2023-
UpdateOct 30, 2024-
Current statusOct 30, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_40288.png

Downloads & links

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Map

FileDownload / File: emd_40288.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.08 Å/pix.
x 300 pix.
= 324. Å		1.08 Å/pix.
x 300 pix.
= 324. Å		1.08 Å/pix.
x 300 pix.
= 324. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.08 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 1.08
Minimum - Maximum-7.5958304 - 11.493687
Average (Standard dev.)0.009828726 (±0.23995437)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 324.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_40288_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_40288_half_map_1.map
Projections & Slices
AxesZYX

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Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_40288_half_map_2.map
Projections & Slices
AxesZYX

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Histogram

Histogram (log scale)

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Sample components

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Entire : DH270.I2-CH848.10.17

EntireName: DH270.I2-CH848.10.17
Components
  • Complex: DH270.I2-CH848.10.17
    • Protein or peptide: CH848.10.17.SOSIP gp120
    • Protein or peptide: CH848.10.17.SOSIP gp41
    • Protein or peptide: DH270.I2.6 variable heavy chain
    • Protein or peptide: DH270.I2.6 variable light chain

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Supramolecule #1: DH270.I2-CH848.10.17

SupramoleculeName: DH270.I2-CH848.10.17 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: CH848.10.17.SOSIP gp120

MacromoleculeName: CH848.10.17.SOSIP gp120 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: HIV-1 06TG.HT008 (virus)
Molecular weightTheoretical: 52.847906 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: AENLWVTVYY GVPVWKEAKT TLFCASDARA YEKEVHNVWA THACVPTDPS PQELVLGNVT ENFNMWKNDM VDQMHEDIIS LWDQSLKPC VKLTPLCVTL ICSNATVKNG TVEEMKNCSF NTTTEIRDKE KKEYALFYKP DIVPLSETNN TSEYRLINCN T SACTQACP ...String:
AENLWVTVYY GVPVWKEAKT TLFCASDARA YEKEVHNVWA THACVPTDPS PQELVLGNVT ENFNMWKNDM VDQMHEDIIS LWDQSLKPC VKLTPLCVTL ICSNATVKNG TVEEMKNCSF NTTTEIRDKE KKEYALFYKP DIVPLSETNN TSEYRLINCN T SACTQACP KVTFEPIPIH YCAPAGYAIL KCNDETFNGT GPCSNVSTVQ CTHGIRPVVS TQLLLNGSLA EKEIVIRSEN LT NNAKIII VHLHTPVEIV CTRPNNNTRK SVRIGPGQTF YATGDIIGDI KQAHCNISEE KWNDTLQKVG IELQKHFPNK TIK YNQSAG GDMEITTHSF NCGGEFFYCN TSNLFNGTYN GTYISTNSSA NSTSTITLQC RIKQIINMWQ GVGRCMYAPP IAGN ITCRS NITGLLLTRD GGTNSNETET FRPAGGDMRD NWRSELYKYK VVKIEPLGVA PTRCKRRVVG RRRRRR

UniProtKB: Envelope glycoprotein gp160

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Macromolecule #2: CH848.10.17.SOSIP gp41

MacromoleculeName: CH848.10.17.SOSIP gp41 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: HIV-1 06TG.HT008 (virus)
Molecular weightTheoretical: 14.733669 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
AVGIGAVFLG FLGAAGSTMG AASMTLTVQA RNLLSGTVWG IKQLQARVLA VERYLRDQQL LGIWGCSGKL ICCTNVPWNS SWSNRNLSE IWDNMTWLQW DKEISNYTQI IYGLLEESQN QQEKNEQDLL ALD

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Macromolecule #3: DH270.I2.6 variable heavy chain

MacromoleculeName: DH270.I2.6 variable heavy chain / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 14.131638 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
QVQLVQSGAE MKNPGASVKV SCAASGYTFT DFYIHWVRQA PGQGLQWMGW MNPKTGRTNT AQNFQGRVTM TRDTSIGTAY MELRSLTSD DTAVYYCATG GWISLYYDSS YYPNFDHWGQ GTLVTVSS

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Macromolecule #4: DH270.I2.6 variable light chain

MacromoleculeName: DH270.I2.6 variable light chain / type: protein_or_peptide / ID: 4 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 11.41154 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
QSALTQPASV SGSPGQSITI SCTGTSYDVG SYDLVSWYQQ HPGKAPKYMI YEVNKRPSGV SNRFSGSKSG NTASLTISGL QAEDEADYY CCSFGGSATV VCGGGTKVTV L

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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

Concentration1.5 mg/mL
BufferpH: 7.2
GridModel: Quantifoil R1.2/1.3 / Support film - Material: CARBON / Support film - topology: HOLEY
VitrificationCryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 295 K / Instrument: LEICA EM GP

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 4.1 µm / Nominal defocus min: 0.7000000000000001 µm
Sample stageCooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: INSILICO MODEL
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 39612
Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: PROJECTION MATCHING
FSC plot (resolution estimation)

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