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- PDB-7lua: Cryo-EM structure of DH898.1 Fab-dimer bound near the CD4 binding... -

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Basic information

Entry
Database: PDB / ID: 7lua
TitleCryo-EM structure of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer
Components
  • CH848 SOSIP gp120
  • DH898.1 heavy chain
  • DH898.1 light chain
  • Env polyproteinEnv (gene)
KeywordsVIRAL PROTEIN/IMMUNE SYSTEM / Fab-dimerized / glycan-reactive / antibodies / HIV-1 / DH898.1 / Fab-dimer / glycan-reactive neutralizing antibody / macaque HIV-1 vaccine-induced / B cell lineage / 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 / viral process / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / membrane => GO:0016020 / viral protein processing / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response ...positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / viral process / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / membrane => GO:0016020 / 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 / host cell plasma membrane / virion membrane / structural molecule activity / 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 / Env polyprotein
Similarity search - Component
Biological speciesHuman immunodeficiency virus 1
Simian-Human immunodeficiency virus
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.7 Å
AuthorsManne, K. / Edwards, R.J. / Acharya, P.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI145687 United States
Citation
Journal: Cell / Year: 2021
Title: Fab-dimerized glycan-reactive antibodies are a structural category of natural antibodies.
Authors: Wilton B Williams / R Ryan Meyerhoff / R J Edwards / Hui Li / Kartik Manne / Nathan I Nicely / Rory Henderson / Ye Zhou / Katarzyna Janowska / Katayoun Mansouri / Sophie Gobeil / Tyler ...Authors: Wilton B Williams / R Ryan Meyerhoff / R J Edwards / Hui Li / Kartik Manne / Nathan I Nicely / Rory Henderson / Ye Zhou / Katarzyna Janowska / Katayoun Mansouri / Sophie Gobeil / Tyler Evangelous / Bhavna Hora / Madison Berry / A Yousef Abuahmad / Jordan Sprenz / Margaret Deyton / Victoria Stalls / Megan Kopp / Allen L Hsu / Mario J Borgnia / Guillaume B E Stewart-Jones / Matthew S Lee / Naomi Bronkema / M Anthony Moody / Kevin Wiehe / Todd Bradley / S Munir Alam / Robert J Parks / Andrew Foulger / Thomas Oguin / Gregory D Sempowski / Mattia Bonsignori / Celia C LaBranche / David C Montefiori / Michael Seaman / Sampa Santra / John Perfect / Joseph R Francica / Geoffrey M Lynn / Baptiste Aussedat / William E Walkowicz / Richard Laga / Garnett Kelsoe / Kevin O Saunders / Daniela Fera / Peter D Kwong / Robert A Seder / Alberto Bartesaghi / George M Shaw / Priyamvada Acharya / Barton F Haynes /
Abstract: Natural antibodies (Abs) can target host glycans on the surface of pathogens. We studied the evolution of glycan-reactive B cells of rhesus macaques and humans using glycosylated HIV-1 envelope (Env) ...Natural antibodies (Abs) can target host glycans on the surface of pathogens. We studied the evolution of glycan-reactive B cells of rhesus macaques and humans using glycosylated HIV-1 envelope (Env) as a model antigen. 2G12 is a broadly neutralizing Ab (bnAb) that targets a conserved glycan patch on Env of geographically diverse HIV-1 strains using a unique heavy-chain (V) domain-swapped architecture that results in fragment antigen-binding (Fab) dimerization. Here, we describe HIV-1 Env Fab-dimerized glycan (FDG)-reactive bnAbs without V-swapped domains from simian-human immunodeficiency virus (SHIV)-infected macaques. FDG Abs also recognized cell-surface glycans on diverse pathogens, including yeast and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike. FDG precursors were expanded by glycan-bearing immunogens in macaques and were abundant in HIV-1-naive humans. Moreover, FDG precursors were predominately mutated IgMIgDCD27, thus suggesting that they originated from a pool of antigen-experienced IgM or marginal zone B cells.
#1: Journal: bioRxiv / Year: 2020
Title: Fab-dimerized glycan-reactive antibodies neutralize HIV and are prevalent in humans and rhesus macaques
Authors: Acharya, P. / Williams, W. / Henderson, R. / Janowska, K. / Manne, K. / Parks, R. / Deyton, M. / Sprenz, J. / Stalls, V. / Kopp, M. / Mansouri, K. / Edwards, R.J. / Meyerhoff, R.R. / Oguin, ...Authors: Acharya, P. / Williams, W. / Henderson, R. / Janowska, K. / Manne, K. / Parks, R. / Deyton, M. / Sprenz, J. / Stalls, V. / Kopp, M. / Mansouri, K. / Edwards, R.J. / Meyerhoff, R.R. / Oguin, T. / Sempowski, G. / Saunders, K. / Haynes, B.F.
History
DepositionFeb 21, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 17, 2021Provider: repository / Type: Initial release
Revision 1.1Jun 2, 2021Group: Database references / Category: citation / citation_author
Revision 1.2Jun 9, 2021Group: Database references / Category: citation / Item: _citation.journal_volume / _citation.page_first

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Structure visualization

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  • Deposited structure unit
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  • EMDB-23519
  • Imaged by UCSF Chimera
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Structure viewerMolecule:
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Assembly

Deposited unit
a: CH848 SOSIP gp120
b: Env polyprotein
c: CH848 SOSIP gp120
d: Env polyprotein
e: CH848 SOSIP gp120
f: Env polyprotein
g: DH898.1 light chain
h: DH898.1 heavy chain
i: DH898.1 heavy chain
j: DH898.1 light chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)327,76867
Polymers300,22210
Non-polymers27,54657
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 3 types, 8 molecules acebdfhi

#1: Protein CH848 SOSIP gp120 / Envelope glycoprotein gp120


Mass: 52061.930 Da / Num. of mol.: 3 / Fragment: UNP residues 30-492
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Production host: Homo sapiens (human) / References: UniProt: A0A1W6IPB2
#2: Protein Env polyprotein / Env (gene) / Envelope glycoprotein gp160 / Glycoprotein 120 / Surface protein gp120 / Transmembrane protein gp41


Mass: 16578.803 Da / Num. of mol.: 3 / Fragment: UNP residue 503-648
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Simian-Human immunodeficiency virus / Gene: env / Production host: Homo sapiens (human) / References: UniProt: A0A6H1VEB8
#4: Protein DH898.1 heavy chain


Mass: 23596.594 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)

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Antibody , 1 types, 2 molecules gj

#3: Antibody DH898.1 light chain


Mass: 23553.250 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)

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Sugars , 5 types, 57 molecules

#5: 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.: 26
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam 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
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}LINUCSPDB-CARE
#6: 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.: 9
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam 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
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#7: Polysaccharide
alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 910.823 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3[DManpa1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/3,5,4/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3/a4-b1_b4-c1_c3-d1_c6-e1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{}}}}LINUCSPDB-CARE
#8: Polysaccharide alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]beta-D- ...alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-6)-[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: 1072.964 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-6DManpa1-6[DManpa1-3]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/3,6,5/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3-3/a4-b1_b4-c1_c3-d1_c6-e1_e6-f1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{[(6+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 / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 17 / 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: Cryo-EM structure of DH898.1 Fab-dimer bound near the CD4 binding site of HIV-1 Env CH848 SOSIP trimer.
Type: COMPLEX / Entity ID: #1-#4 / Source: MULTIPLE SOURCES
Source (natural)Organism: Human immunodeficiency virus 1
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: LEICA EM GP / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 293 K / Details: blot for 2.5 seconds before plunging

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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 / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 93.15 K / Temperature (min): 93.15 K
Image recordingElectron dose: 62 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of real images: 3230

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Processing

SoftwareName: PHENIX / Version: 1.17.1_3660: / Classification: refinement
EM software
IDNameCategory
2Latitudeimage acquisition
4cryoSPARCCTF correction
7UCSF Chimeramodel fitting
8Cootmodel fitting
10Cootmodel refinement
11PHENIXmodel refinement
12ISOLDEmodel refinement
13cryoSPARCinitial Euler assignment
14cryoSPARCfinal Euler assignment
15cryoSPARCclassification
16cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 4.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 59012 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.01422837
ELECTRON MICROSCOPYf_angle_d1.94431080
ELECTRON MICROSCOPYf_dihedral_angle_d18.1128609
ELECTRON MICROSCOPYf_chiral_restr0.1073945
ELECTRON MICROSCOPYf_plane_restr0.0163770

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