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- PDB-7sq1: BG505.MD39TS Env trimer in complex with Fab from antibody C05 -

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Basic information

Entry
Database: PDB / ID: 7sq1
TitleBG505.MD39TS Env trimer in complex with Fab from antibody C05
Components
  • C05 Fab Light chain
  • C05 Fab heavy chain
  • Envelope glycoprotein gp160
  • Transmembrane protein gp41
KeywordsViral Protein/Immune System / antibody / Env / envelope / Viral Protein-Immune System complex
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 / Immunoglobulins / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
Envelope glycoprotein gp160
Similarity search - Component
Biological speciesHuman immunodeficiency virus 1
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.8 Å
AuthorsMoore, A. / Du, J. / Xu, Z. / Walker, S. / Kulp, D.W. / Pallesen, J.
Funding support1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)U19 Al109646-04
CitationJournal: Nat Commun / Year: 2022
Title: Induction of tier-2 neutralizing antibodies in mice with a DNA-encoded HIV envelope native like trimer.
Authors: Ziyang Xu / Susanne Walker / Megan C Wise / Neethu Chokkalingam / Mansi Purwar / Alan Moore / Edgar Tello-Ruiz / Yuanhan Wu / Sonali Majumdar / Kylie M Konrath / Abhijeet Kulkarni / Nicholas ...Authors: Ziyang Xu / Susanne Walker / Megan C Wise / Neethu Chokkalingam / Mansi Purwar / Alan Moore / Edgar Tello-Ruiz / Yuanhan Wu / Sonali Majumdar / Kylie M Konrath / Abhijeet Kulkarni / Nicholas J Tursi / Faraz I Zaidi / Emma L Reuschel / Ishaan Patel / April Obeirne / Jianqiu Du / Katherine Schultheis / Lauren Gites / Trevor Smith / Janess Mendoza / Kate E Broderick / Laurent Humeau / Jesper Pallesen / David B Weiner / Daniel W Kulp /
Abstract: HIV Envelope (Env) is the main vaccine target for induction of neutralizing antibodies. Stabilizing Env into native-like trimer (NLT) conformations is required for recombinant protein immunogens to ...HIV Envelope (Env) is the main vaccine target for induction of neutralizing antibodies. Stabilizing Env into native-like trimer (NLT) conformations is required for recombinant protein immunogens to induce autologous neutralizing antibodies(nAbs) against difficult to neutralize HIV strains (tier-2) in rabbits and non-human primates. Immunizations of mice with NLTs have generally failed to induce tier-2 nAbs. Here, we show that DNA-encoded NLTs fold properly in vivo and induce autologous tier-2 nAbs in mice. DNA-encoded NLTs also uniquely induce both CD4 + and CD8 + T-cell responses as compared to corresponding protein immunizations. Murine neutralizing antibodies are identified with an advanced sequencing technology. The structure of an Env-Ab (C05) complex, as determined by cryo-EM, identifies a previously undescribed neutralizing Env C3/V5 epitope. Beyond potential functional immunity gains, DNA vaccines permit in vivo folding of structured antigens and provide significant cost and speed advantages for enabling rapid evaluation of new HIV vaccines.
History
DepositionNov 4, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 22, 2022Provider: repository / Type: Initial release
Revision 1.1Dec 7, 2022Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.2Oct 30, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
B: Transmembrane protein gp41
C: Envelope glycoprotein gp160
D: Transmembrane protein gp41
E: Envelope glycoprotein gp160
L: C05 Fab Light chain
H: C05 Fab heavy chain
F: Transmembrane protein gp41
G: Envelope glycoprotein gp160
I: C05 Fab Light chain
A: C05 Fab heavy chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)282,50777
Polymers261,67410
Non-polymers20,83367
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration, electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 2 types, 6 molecules BDFCEG

#1: Protein Transmembrane protein gp41 / TM / Glycoprotein 41 / gp41


Mass: 17134.324 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Production host: Homo sapiens (human) / References: UniProt: Q2N0S6
#2: Protein Envelope glycoprotein gp160 / Env polyprotein


Mass: 52917.855 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Production host: Homo sapiens (human) / References: UniProt: Q2N0S6

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Antibody , 2 types, 4 molecules LIHA

#3: Antibody C05 Fab Light chain


Mass: 12031.465 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Homo sapiens (human)
#4: Antibody C05 Fab heavy chain


Mass: 13727.245 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Homo sapiens (human)

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Sugars , 5 types, 67 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.: 21
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 alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose


Type: oligosaccharide / Mass: 342.297 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3DManpb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,2,1/[a1122h-1b_1-5][a1122h-1a_1-5]/1-2/a3-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-Manp]{[(3+1)][a-D-Manp]{}}LINUCSPDB-CARE
#7: 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.: 3
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
#8: 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
#9: 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


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 41 / 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
Has protein modificationY

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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: BG505.MD39TS Env trimer in complex with Fab from antibody C05
Type: COMPLEX / Entity ID: #1-#4 / Source: MULTIPLE SOURCES
Molecular weightValue: 0.41 MDa / Experimental value: NO
Buffer solutionpH: 7.4
SpecimenConc.: 0.05 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
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 FIELD
Image recordingAverage exposure time: 2.59 sec. / Electron dose: 60.6 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 5485
Image scansSampling size: 5 µm / Width: 6000 / Height: 4000

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Processing

EM software
IDNameVersionCategory
1RELION3.1particle selection
2EPUimage acquisition
4CTFFIND4CTF correction
7UCSF Chimeramodel fitting
8Rosettamodel fitting
10RELION3.1initial Euler assignment
11RELION3.1final Euler assignment
13RELION3.13D reconstruction
14Rosettamodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1455164
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 121929 / Algorithm: FOURIER SPACE / Symmetry type: POINT
Atomic model buildingProtocol: OTHER / Space: REAL

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