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- EMDB-46649: Cryo-EM structure of the BG505 SOSIPv2 -

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Basic information

Entry
Database: EMDB / ID: EMD-46649
TitleCryo-EM structure of the BG505 SOSIPv2
Map datasharpened EM map
Sample
  • Complex: HIV-1 BG505 SOSIPv2 trimer
    • Protein or peptide: BG505 SOSIP gp120
    • Protein or peptide: BG505 SOSIP gp41
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsHIV-1 / Envelope / SOSIP / VIRAL PROTEIN
Function / homology
Function and homology information


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 ...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 / 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) / Human immunodeficiency virus 1
Methodsingle particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsDeLaitsch AT / Bjorkman PJ
Funding support United States, 1 items
OrganizationGrant numberCountry
Bill & Melinda Gates FoundationINV-002143 United States
CitationJournal: To Be Published
Title: Cryo-EM structure of the BG505 SOSIPv2
Authors: DeLaitsch AT / Bjorkman PJ
History
DepositionAug 20, 2024-
Header (metadata) releaseAug 20, 2025-
Map releaseAug 20, 2025-
UpdateAug 20, 2025-
Current statusAug 20, 2025Processing site: RCSB / Status: Released

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Structure visualization

Downloads & links

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Map

FileDownload / File: emd_46649.map.gz / Format: CCP4 / Size: 83.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationsharpened EM map
Voxel sizeX=Y=Z: 0.832 Å
Density
Contour LevelBy AUTHOR: 0.17
Minimum - Maximum-0.6405525 - 1.0624406
Average (Standard dev.)0.001926674 (±0.037176725)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions280280280
Spacing280280280
CellA=B=C: 232.96 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : HIV-1 BG505 SOSIPv2 trimer

EntireName: HIV-1 BG505 SOSIPv2 trimer
Components
  • Complex: HIV-1 BG505 SOSIPv2 trimer
    • Protein or peptide: BG505 SOSIP gp120
    • Protein or peptide: BG505 SOSIP gp41
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: HIV-1 BG505 SOSIPv2 trimer

SupramoleculeName: HIV-1 BG505 SOSIPv2 trimer / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: BG505 SOSIP gp120

MacromoleculeName: BG505 SOSIP gp120 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 52.665602 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: NLWVTVYYGV PVWKDAETTL FCASDAKAYE TEKHNVWATH ACVPTDPNPQ EIHLENVTEE FNMWKNNMVE QMHTDIISLW DQSLKPCVK LTPLCVTLQC TNVTNNITDD MRGELKNCSF NMTTELRDKK QKVYSLFYRL DVVQINENQG NRSNNSNKEY R LINCNTSA ...String:
NLWVTVYYGV PVWKDAETTL FCASDAKAYE TEKHNVWATH ACVPTDPNPQ EIHLENVTEE FNMWKNNMVE QMHTDIISLW DQSLKPCVK LTPLCVTLQC TNVTNNITDD MRGELKNCSF NMTTELRDKK QKVYSLFYRL DVVQINENQG NRSNNSNKEY R LINCNTSA ITQACPKVSF EPIPIHYCAP AGFAILKCKD KKFNGTGPCP SVSTVQCTHG IKPVVSTQLL LNGSLAEEEV MI RSENITN NAKNILVQFN TPVQINCTRP NNNTRKSIRI GPGQAFYATG DIIGDIRQAH CNVSKATWNE TLGKVVKQLR KHF GNNTII RFANSSGGDL EVTTHSFNCG GEFFYCNTSG LFNSTWISNT SVQGSNSTGS NDSITLPCRI KQIINMWQRI GQAM YAPPI QGVIRCVSNI TGLILTRDGG STNSTTETFR PGGGDMRDNW RSELYKYKVV KIEPLGVAPT RCKRR

UniProtKB: Envelope glycoprotein gp160

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Macromolecule #2: BG505 SOSIP gp41

MacromoleculeName: BG505 SOSIP gp41 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 16.578803 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
FLGFLGAAGS TMGAASMTLT VQARNLLSGI VQQQSNLLRA PEAQQHLLKL TVWGIKQLQA RVLAVERYLR DQQLLGIWGC SGKLICCTN VPWNSSWSNR NLSEIWDNMT WLQWDKEISN YTQIIYGLLE ESQNQQEKNE QDLLALD

UniProtKB: Envelope glycoprotein gp160

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Macromolecule #5: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 5 / Number of copies: 29 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

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

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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

Concentration4.0 mg/mL
BufferpH: 8
Component:
ConcentrationNameFormula
0.02 MTris
0.15 MSodium ChlorideNaCl
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 295 K / Instrument: FEI VITROBOT MARK IV / Details: 3s blot, 0 blot force.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Detector mode: COUNTING / Number grids imaged: 1 / Number real images: 11055 / Average exposure time: 1.8 sec. / 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: 3.0 µm / Nominal defocus min: 1.0 µm / Nominal magnification: 105000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: cryoSPARC / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: INSILICO MODEL / In silico model: Ab initio model generated in cryoSPARC
Final reconstructionApplied symmetry - Point group: C3 (3 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 1637484
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC

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Atomic model buiding 1

Initial modelPDB ID:

6udj


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-9d8v:
Cryo-EM structure of the BG505 SOSIPv2

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