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- EMDB-0572: HIV-1 vaccine elicited polyclonal BM57 Fab in complex with the HI... -

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Basic information

Entry
Database: EMDB / ID: EMD-0572
TitleHIV-1 vaccine elicited polyclonal BM57 Fab in complex with the HIV Env trimer BG505 SOSIPv5.2
Map data
Sample
  • Complex: HIV-1 vaccine elicited Fab in complex with the HIV Env trimer BG505 SOSIPv5.2
    • Complex: SOSIP trimer
    • Complex: Polyclonal Fab
Biological speciesHomo sapiens (human) / Macaca (macaques)
Methodsingle particle reconstruction / negative staining / Resolution: 24.6 Å
AuthorsNogal B / Ward AB
CitationJournal: Cell / Year: 2019
Title: Slow Delivery Immunization Enhances HIV Neutralizing Antibody and Germinal Center Responses via Modulation of Immunodominance.
Authors: Kimberly M Cirelli / Diane G Carnathan / Bartek Nogal / Jacob T Martin / Oscar L Rodriguez / Amit A Upadhyay / Chiamaka A Enemuo / Etse H Gebru / Yury Choe / Federico Viviano / Catherine ...Authors: Kimberly M Cirelli / Diane G Carnathan / Bartek Nogal / Jacob T Martin / Oscar L Rodriguez / Amit A Upadhyay / Chiamaka A Enemuo / Etse H Gebru / Yury Choe / Federico Viviano / Catherine Nakao / Matthias G Pauthner / Samantha Reiss / Christopher A Cottrell / Melissa L Smith / Raiza Bastidas / William Gibson / Amber N Wolabaugh / Mariane B Melo / Benjamin Cossette / Venkatesh Kumar / Nirav B Patel / Talar Tokatlian / Sergey Menis / Daniel W Kulp / Dennis R Burton / Ben Murrell / William R Schief / Steven E Bosinger / Andrew B Ward / Corey T Watson / Guido Silvestri / Darrell J Irvine / Shane Crotty /
Abstract: Conventional immunization strategies will likely be insufficient for the development of a broadly neutralizing antibody (bnAb) vaccine for HIV or other difficult pathogens because of the ...Conventional immunization strategies will likely be insufficient for the development of a broadly neutralizing antibody (bnAb) vaccine for HIV or other difficult pathogens because of the immunological hurdles posed, including B cell immunodominance and germinal center (GC) quantity and quality. We found that two independent methods of slow delivery immunization of rhesus monkeys (RMs) resulted in more robust T follicular helper (T) cell responses and GC B cells with improved Env-binding, tracked by longitudinal fine needle aspirates. Improved GCs correlated with the development of >20-fold higher titers of autologous nAbs. Using a new RM genomic immunoglobulin locus reference, we identified differential IgV gene use between immunization modalities. Ab mapping demonstrated targeting of immunodominant non-neutralizing epitopes by conventional bolus-immunized animals, whereas slow delivery-immunized animals targeted a more diverse set of epitopes. Thus, alternative immunization strategies can enhance nAb development by altering GCs and modulating the immunodominance of non-neutralizing epitopes.
History
DepositionFeb 16, 2019-
Header (metadata) releaseFeb 27, 2019-
Map releaseMay 29, 2019-
UpdateMay 29, 2019-
Current statusMay 29, 2019Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.0155
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by cylindrical radius
  • Surface level: 0.0155
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_0572.png

Downloads & links

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Map

FileDownload / File: emd_0572.map.gz / Format: CCP4 / Size: 11.4 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 2.05 Å
Density
Contour LevelBy AUTHOR: 0.0155 / Movie #1: 0.0155
Minimum - Maximum-0.051387273 - 0.114785634
Average (Standard dev.)0.0006120264 (±0.008195932)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions144144144
Spacing144144144
CellA=B=C: 295.19998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z2.052.052.05
M x/y/z144144144
origin x/y/z0.0000.0000.000
length x/y/z295.200295.200295.200
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS144144144
D min/max/mean-0.0510.1150.001

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Supplemental data

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Sample components

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Entire : HIV-1 vaccine elicited Fab in complex with the HIV Env trimer BG5...

EntireName: HIV-1 vaccine elicited Fab in complex with the HIV Env trimer BG505 SOSIPv5.2
Components
  • Complex: HIV-1 vaccine elicited Fab in complex with the HIV Env trimer BG505 SOSIPv5.2
    • Complex: SOSIP trimer
    • Complex: Polyclonal Fab

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Supramolecule #1: HIV-1 vaccine elicited Fab in complex with the HIV Env trimer BG5...

SupramoleculeName: HIV-1 vaccine elicited Fab in complex with the HIV Env trimer BG505 SOSIPv5.2
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4

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Supramolecule #2: SOSIP trimer

SupramoleculeName: SOSIP trimer / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#2
Source (natural)Organism: Homo sapiens (human)

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Supramolecule #3: Polyclonal Fab

SupramoleculeName: Polyclonal Fab / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #3-#4
Source (natural)Organism: Macaca (macaques)

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Experimental details

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Structure determination

Methodnegative staining
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.4
StainingType: NEGATIVE / Material: Uranyl Formate

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Electron microscopy

MicroscopeFEI TECNAI 12
Electron beamAcceleration voltage: 120 kV / Electron source: LAB6
Electron opticsC2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Sample stageSpecimen holder model: SIDE ENTRY, EUCENTRIC
Image recordingFilm or detector model: OTHER / Digitization - Dimensions - Width: 4096 pixel / Digitization - Dimensions - Height: 4096 pixel / Digitization - Sampling interval: 14.0 µm / Number grids imaged: 1 / Average exposure time: 1.0 sec. / Average electron dose: 25.0 e/Å2

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Image processing

Particle selectionNumber selected: 118808
Initial angle assignmentType: NOT APPLICABLE
Final 3D classificationNumber classes: 2 / Avg.num./class: 15000 / Software - Name: RELION (ver. 3.0b0)
Final angle assignmentType: NOT APPLICABLE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 24.6 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0b0) / Number images used: 10374

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