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- PDB-8tni: Cryo-EM structure of HIV-1 Env BG505 DS-SOSIP in complex with bro... -

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Basic information

Entry
Database: PDB / ID: 8tni
TitleCryo-EM structure of HIV-1 Env BG505 DS-SOSIP in complex with broadly neutralizing bi-specific antibody CAP256L-R27 targeting the CD4-binding site and the V2-apex
Components
  • (HIV-1 BG505 DS-SOSIP ...) x 2
  • Heavy chain of bi-specific antibody CAP256L-R27
  • Light chain of bi-specific antibody CAP256L-R27
KeywordsVIRAL PROTEIN/IMMUNE SYSTEM / HIV-1 Envelope / bi-specific / antibody / nanobody / VHH / llama / BG505 DS-SOSIP / neutralization / CAP256 / R27 / immunization / 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 / 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
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.61 Å
AuthorsZhou, T. / Morano, N.C. / Roark, R.S. / Kwong, P.D. / Xu, J.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID) United States
CitationJournal: To Be Published
Title: Cryo-EM structure of HIV-1 Env BG505 DS-SOSIP in complex with broadly neutralizing bi-specific antibody CAP256L-R27 targeting the CD4-binding site and the V2-apex
Authors: Xu, J. / Zhou, T.
History
DepositionAug 1, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 8, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: HIV-1 BG505 DS-SOSIP gp120
B: HIV-1 BG505 DS-SOSIP gp41
C: HIV-1 BG505 DS-SOSIP gp120
D: HIV-1 BG505 DS-SOSIP gp41
E: HIV-1 BG505 DS-SOSIP gp120
F: HIV-1 BG505 DS-SOSIP gp41
H: Light chain of bi-specific antibody CAP256L-R27
I: Light chain of bi-specific antibody CAP256L-R27
X: Heavy chain of bi-specific antibody CAP256L-R27
J: Light chain of bi-specific antibody CAP256L-R27
hetero molecules


Theoretical massNumber of molelcules
Total (without water)366,67759
Polymers351,41110
Non-polymers15,26649
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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HIV-1 BG505 DS-SOSIP ... , 2 types, 6 molecules ACEBDF

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


Mass: 54086.324 Da / Num. of mol.: 3 / Fragment: UNP residues 30-505
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Cell (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: Q2N0S6
#2: Protein HIV-1 BG505 DS-SOSIP gp41


Mass: 17146.482 Da / Num. of mol.: 3 / Fragment: UNP residues 509-661
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Cell (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: Q2N0S6

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Antibody , 2 types, 4 molecules HIJX

#3: Antibody Light chain of bi-specific antibody CAP256L-R27


Mass: 36949.734 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell (production host): HEK293F / Production host: Homo sapiens (human)
#4: Antibody Heavy chain of bi-specific antibody CAP256L-R27


Mass: 26863.039 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell (production host): HEK293F / Production host: Homo sapiens (human)

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Sugars , 4 types, 49 molecules

#5: Polysaccharide
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 12
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#6: Polysaccharide
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 586.542 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}}LINUCSPDB-CARE
#7: Polysaccharide alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 748.682 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,4,3/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3/a4-b1_b4-c1_c3-d1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#8: Sugar...
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 32 / Source method: obtained synthetically / Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Details

Has ligand of interestN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Complex between HIV-1 Env BG505 DS-SOSIP and Bi-specific antibody CAP256L-R27
Type: COMPLEX / Entity ID: #1-#4 / Source: MULTIPLE SOURCES
Molecular weightValue: 0.405 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human) / Cell: HEK 293F / Plasmid: pVRC8400
Buffer solutionpH: 7.4
SpecimenConc.: 3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: Purified complex by FPLC and concentrated to final concentration.
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 103000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 100 K / Temperature (min): 70 K
Image recordingElectron dose: 58.06 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1cryoSPARC3particle selection
2Leginonimage acquisition
4cryoSPARC3CTF correction
7Cootmodel fitting
9PHENIXmodel refinement
12cryoSPARC3classification
13cryoSPARC33D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1189143 / Details: Blob pick in cryoSparc
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.61 Å / Resolution method: FSC 0.5 CUT-OFF / Num. of particles: 236154 / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingB value: 82.9 / Protocol: FLEXIBLE FIT / Space: REAL
Atomic model buildingPDB-ID: 7LPN

7lpn


Accession code: 7LPN / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00419775
ELECTRON MICROSCOPYf_angle_d0.75626832
ELECTRON MICROSCOPYf_dihedral_angle_d6.7892978
ELECTRON MICROSCOPYf_chiral_restr0.063194
ELECTRON MICROSCOPYf_plane_restr0.0063357

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