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- PDB-6v8z: VRC03 and 10-1074 Bound BG505 F14 HIV-1 SOSIP Envelope Trimer Str... -
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Basic information
Entry | Database: PDB / ID: 6v8z | |||||||||
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Title | VRC03 and 10-1074 Bound BG505 F14 HIV-1 SOSIP Envelope Trimer Structure | |||||||||
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![]() | VIRAL PROTEIN/IMMUNE SYSTEM / Trimer / Complex / Immunogen / HIV-1 / VIRAL PROTEIN-IMMUNE SYSTEM complex | |||||||||
Function / homology | ![]() immunoglobulin complex / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / adaptive immune response / viral protein processing / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope ...immunoglobulin complex / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / adaptive immune response / 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 / extracellular region / identical protein binding / membrane / plasma membrane Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.9 Å | |||||||||
![]() | Henderson, R. / Acharya, P. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Disruption of the HIV-1 Envelope allosteric network blocks CD4-induced rearrangements. Authors: Rory Henderson / Maolin Lu / Ye Zhou / Zekun Mu / Robert Parks / Qifeng Han / Allen L Hsu / Elizabeth Carter / Scott C Blanchard / R J Edwards / Kevin Wiehe / Kevin O Saunders / Mario J ...Authors: Rory Henderson / Maolin Lu / Ye Zhou / Zekun Mu / Robert Parks / Qifeng Han / Allen L Hsu / Elizabeth Carter / Scott C Blanchard / R J Edwards / Kevin Wiehe / Kevin O Saunders / Mario J Borgnia / Alberto Bartesaghi / Walther Mothes / Barton F Haynes / Priyamvada Acharya / S Munir Alam / ![]() Abstract: The trimeric HIV-1 Envelope protein (Env) mediates viral-host cell fusion via a network of conformational transitions, with allosteric elements in each protomer orchestrating host receptor-induced ...The trimeric HIV-1 Envelope protein (Env) mediates viral-host cell fusion via a network of conformational transitions, with allosteric elements in each protomer orchestrating host receptor-induced exposure of the co-receptor binding site and fusion elements. To understand the molecular details of this allostery, here, we introduce Env mutations aimed to prevent CD4-induced rearrangements in the HIV-1 BG505 Env trimer. Binding analysis and single-molecule Förster Resonance Energy Transfer confirm that these mutations prevent CD4-induced transitions of the HIV-1 Env. Structural analysis by single-particle cryo-electron microscopy performed on the BG505 SOSIP mutant Env proteins shows rearrangements in the gp120 topological layer contacts with gp41. Displacement of a conserved tryptophan (W571) from its typical pocket in these Env mutants renders the Env insensitive to CD4 binding. These results reveal the critical function of W571 as a conformational switch in Env allostery and receptor-mediated viral entry and provide insights on Env conformation that are relevant for vaccine design. | |||||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 803.2 KB | Display | ![]() |
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PDB format | ![]() | 660.7 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 21112MC ![]() 6v8xC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Protein , 2 types, 6 molecules AGMBHN
#1: Protein | Mass: 52955.289 Da / Num. of mol.: 3 / Fragment: UNP residues 31-502 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | Mass: 16677.932 Da / Num. of mol.: 3 / Fragment: UNP residues 515-661 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-Antibody , 4 types, 12 molecules DJPEKQCIOFLR
#3: Antibody | Mass: 25316.314 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #4: Antibody | Mass: 22843.430 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #5: Antibody | Mass: 25104.303 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #6: Antibody | Mass: 23043.652 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Sugars , 5 types, 57 molecules 
#7: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source #8: Polysaccharide | Source method: isolated from a genetically manipulated source #9: Polysaccharide | Source method: isolated from a genetically manipulated source #10: Polysaccharide | Source method: isolated from a genetically manipulated source #11: Sugar | ChemComp-NAG / |
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-Details
Has ligand of interest | N |
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Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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Molecular weight | Experimental value: NO | ||||||||||||||||||||||||||||||
Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 7.4 | ||||||||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||
Specimen support | Details: unspecified | ||||||||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 54 e/Å2 / Film or detector model: FEI FALCON III (4k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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Symmetry | Point symmetry: C3 (3 fold cyclic) |
3D reconstruction | Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 84378 / Symmetry type: POINT |