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- PDB-7t2p: The Envelope Glycoprotein SIVmac239.K180S SOSIP trimer in complex... -

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Basic information

Entry
Database: PDB / ID: 7t2p
TitleThe Envelope Glycoprotein SIVmac239.K180S SOSIP trimer in complex with 3 copies of the neutralizing antibody K11
Components
  • (Envelope glycoprotein ...) x 2
  • K11 Fab heavy chain
  • K11 Fab light chain
KeywordsVIRAL PROTEIN/IMMUNE SYSTEM / SIV / Env / vaccine / neutralizing antibody / glycoprotein / VIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


membrane fusion involved in viral entry into host cell / host cell endosome membrane / membrane => GO:0016020 / symbiont entry into host cell / viral envelope / virion attachment to host cell / host cell plasma membrane / virion membrane / structural molecule activity / plasma membrane
Similarity search - Function
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 / Envelope glycoprotein gp160
Similarity search - Component
Biological speciesSimian immunodeficiency virus
Macaca mulatta (Rhesus monkey)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.47 Å
AuthorsBerndsen, Z.T. / Ward, A.B.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)UM1 AI144462 United States
Bill & Melinda Gates FoundationOPP1196345/INV-008813 United States
CitationJournal: Nat Commun / Year: 2022
Title: Molecular insights into antibody-mediated protection against the prototypic simian immunodeficiency virus.
Authors: Fangzhu Zhao / Zachary T Berndsen / Nuria Pedreño-Lopez / Alison Burns / Joel D Allen / Shawn Barman / Wen-Hsin Lee / Srirupa Chakraborty / Sandrasegaram Gnanakaran / Leigh M Sewall / ...Authors: Fangzhu Zhao / Zachary T Berndsen / Nuria Pedreño-Lopez / Alison Burns / Joel D Allen / Shawn Barman / Wen-Hsin Lee / Srirupa Chakraborty / Sandrasegaram Gnanakaran / Leigh M Sewall / Gabriel Ozorowski / Oliver Limbo / Ge Song / Peter Yong / Sean Callaghan / Jessica Coppola / Kim L Weisgrau / Jeffrey D Lifson / Rebecca Nedellec / Thomas B Voigt / Fernanda Laurino / Johan Louw / Brandon C Rosen / Michael Ricciardi / Max Crispin / Ronald C Desrosiers / Eva G Rakasz / David I Watkins / Raiees Andrabi / Andrew B Ward / Dennis R Burton / Devin Sok /
Abstract: SIVmac239 infection of macaques is a favored model of human HIV infection. However, the SIVmac239 envelope (Env) trimer structure, glycan occupancy, and the targets and ability of neutralizing ...SIVmac239 infection of macaques is a favored model of human HIV infection. However, the SIVmac239 envelope (Env) trimer structure, glycan occupancy, and the targets and ability of neutralizing antibodies (nAbs) to protect against SIVmac239 remain unknown. Here, we report the isolation of SIVmac239 nAbs that recognize a glycan hole and the V1/V4 loop. A high-resolution structure of a SIVmac239 Env trimer-nAb complex shows many similarities to HIV and SIVcpz Envs, but with distinct V4 features and an extended V1 loop. Moreover, SIVmac239 Env has a higher glycan shield density than HIV Env that may contribute to poor or delayed nAb responses in SIVmac239-infected macaques. Passive transfer of a nAb protects macaques from repeated intravenous SIVmac239 challenge at serum titers comparable to those described for protection of humans against HIV infection. Our results provide structural insights for vaccine design and shed light on antibody-mediated protection in the SIV model.
History
DepositionDec 6, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 19, 2022Provider: repository / Type: Initial release
Revision 1.1Jul 5, 2023Group: Structure summary / Category: audit_author

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Envelope glycoprotein gp120
B: Envelope glycoprotein gp41
H: K11 Fab heavy chain
L: K11 Fab light chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)167,73029
Polymers157,0534
Non-polymers10,67725
Water00
1
A: Envelope glycoprotein gp120
B: Envelope glycoprotein gp41
H: K11 Fab heavy chain
L: K11 Fab light chain
hetero molecules

A: Envelope glycoprotein gp120
B: Envelope glycoprotein gp41
H: K11 Fab heavy chain
L: K11 Fab light chain
hetero molecules

A: Envelope glycoprotein gp120
B: Envelope glycoprotein gp41
H: K11 Fab heavy chain
L: K11 Fab light chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)503,19087
Polymers471,15912
Non-polymers32,03175
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation2
2


  • Idetical with deposited unit
  • point asymmetric unit
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
SymmetryPoint symmetry: (Schoenflies symbol: C1 (asymmetric))

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Components

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Envelope glycoprotein ... , 2 types, 2 molecules AB

#1: Protein Envelope glycoprotein gp120


Mass: 60324.441 Da / Num. of mol.: 1 / Fragment: UNP residues 1-525 / Mutation: K180S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Simian immunodeficiency virus / Gene: env / Production host: Homo sapiens (human) / References: UniProt: A0A5C0E975
#2: Protein Envelope glycoprotein gp41


Mass: 18144.600 Da / Num. of mol.: 1 / Fragment: UNP residues 515-662
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Simian immunodeficiency virus / Gene: env / Production host: Homo sapiens (human) / References: UniProt: L7XFX7

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Antibody , 2 types, 2 molecules HL

#3: Antibody K11 Fab heavy chain


Mass: 53290.770 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Macaca mulatta (Rhesus monkey) / Production host: Homo sapiens (human)
#4: Antibody K11 Fab light chain


Mass: 25293.150 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Macaca mulatta (Rhesus monkey) / Production host: Homo sapiens (human)

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Sugars , 7 types, 25 molecules

#5: Polysaccharide alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]alpha-D- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[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: 1397.245 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-2DManpa1-3[DManpa1-6]DManpa1-6[DManpa1-3]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,8,7/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3-3-3-3/a4-b1_b4-c1_c3-d1_c6-e1_e3-f1_e6-h1_f2-g1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{[(3+1)][a-D-Manp]{[(2+1)][a-D-Manp]{}}[(6+1)][a-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.: 5
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
#7: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 570.542 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4[LFucpa1-6]DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1221m-1a_1-5]/1-1-2/a4-b1_a6-c1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}[(6+1)][a-L-Fucp]{}}}LINUCSPDB-CARE
#8: Polysaccharide alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D- ...alpha-D-mannopyranose-(1-2)-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: 1072.964 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-2DManpa1-3[DManpa1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam 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-f1_d2-e1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{[(2+1)][a-D-Manp]{}}[(6+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#9: 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.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3[DManpa1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam 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
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#10: 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.: 1
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
#11: 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.: 13 / 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: SIVmac239.K180S SOSIP trimer in complex with 3 copies of K11 Fab
Type: COMPLEX / Entity ID: #1-#4 / Source: MULTIPLE SOURCES
Molecular weightExperimental value: NO
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
21Simian immunodeficiency virus11723
31Macaca mulatta (Rhesus monkey)9544
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenConc.: 1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid type: C-flat-1.2/1.3
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company
MicroscopyModel: FEI TALOS ARCTICA
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 50 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

EM software
IDNameCategory
2Leginonimage acquisition
4GctfCTF correction
10cryoSPARCinitial Euler assignment
11cryoSPARCfinal Euler assignment
13cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C3 (3 fold cyclic)
3D reconstructionResolution: 3.47 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 177365 / Symmetry type: POINT

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