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- PDB-8ttw: Cryo-EM structure of BG505 SOSIP.664 HIV-1 Env trimer in complex ... -
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Open data
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Basic information
Entry | Database: PDB / ID: 8ttw | |||||||||
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Title | Cryo-EM structure of BG505 SOSIP.664 HIV-1 Env trimer in complex with temsavir, 8ANC195, and 10-1074 | |||||||||
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![]() | VIRAL PROTEIN/INHIBITOR/IMMUNE SYSTEM / BG505 SOSIP / 8ANC195 / 10-1074 / BMS-626529 / temsavir / VIRAL PROTEIN-INHIBITOR-IMMUNE SYSTEM complex | |||||||||
Function / homology | ![]() positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / 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 ...positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / 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 / apoptotic process / host cell plasma membrane / structural molecule activity / virion membrane / identical protein binding / plasma membrane Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.96 Å | |||||||||
![]() | Tolbert, W.D. / Pozharski, E. / Pazgier, M. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure-function analyses reveal key molecular determinants of HIV-1 CRF01_AE resistance to the entry inhibitor temsavir. Authors: Jérémie Prévost / Yaozong Chen / Fei Zhou / William D Tolbert / Romain Gasser / Halima Medjahed / Manon Nayrac / Dung N Nguyen / Suneetha Gottumukkala / Ann J Hessell / Venigalla B Rao / ...Authors: Jérémie Prévost / Yaozong Chen / Fei Zhou / William D Tolbert / Romain Gasser / Halima Medjahed / Manon Nayrac / Dung N Nguyen / Suneetha Gottumukkala / Ann J Hessell / Venigalla B Rao / Edwin Pozharski / Rick K Huang / Doreen Matthies / Andrés Finzi / Marzena Pazgier / ![]() ![]() Abstract: The HIV-1 entry inhibitor temsavir prevents the viral receptor CD4 (cluster of differentiation 4) from interacting with the envelope glycoprotein (Env) and blocks its conformational changes. To do ...The HIV-1 entry inhibitor temsavir prevents the viral receptor CD4 (cluster of differentiation 4) from interacting with the envelope glycoprotein (Env) and blocks its conformational changes. To do this, temsavir relies on the presence of a residue with small side chain at position 375 in Env and is unable to neutralize viral strains like CRF01_AE carrying His375. Here we investigate the mechanism of temsavir resistance and show that residue 375 is not the sole determinant of resistance. At least six additional residues within the gp120 inner domain layers, including five distant from the drug-binding pocket, contribute to resistance. A detailed structure-function analysis using engineered viruses and soluble trimer variants reveals that the molecular basis of resistance is mediated by crosstalk between His375 and the inner domain layers. Furthermore, our data confirm that temsavir can adjust its binding mode to accommodate changes in Env conformation, a property that likely contributes to its broad antiviral activity. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 784.7 KB | Display | ![]() |
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PDB format | ![]() | 645 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 | ![]() 41613MC ![]() 8czzC ![]() 8dokC ![]() 8g6uC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Protein , 2 types, 6 molecules AEIBFJ
#1: Protein | Mass: 54064.277 Da / Num. of mol.: 3 / Mutation: A501C T332N E509R K510R A512R V513R Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | Mass: 17146.482 Da / Num. of mol.: 3 / Mutation: I559P T605C Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-Antibody , 4 types, 12 molecules CGKDHLMOQNPR
#3: Antibody | Mass: 25324.402 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #4: Antibody | Mass: 23460.047 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #5: Antibody | Mass: 25661.688 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #6: Antibody | Mass: 23180.760 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Sugars , 5 types, 63 molecules ![](data/chem/img/NAG.gif)
#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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-Non-polymers , 1 types, 3 molecules ![](data/chem/img/83J.gif)
#12: Chemical |
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-Details
Has ligand of interest | Y |
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-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
Component | Name: Complex of BG505 SOSIP.664 with temsavir and the antibody Fabs of 8anc195 and 10-1074 Type: COMPLEX Details: Fab fragments were generated by papain digest of their respective IgGs. Entity ID: #1-#6 / Source: MULTIPLE SOURCES |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 7.2 |
Specimen | Conc.: 4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE |
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Electron microscopy imaging
Microscopy | Model: TFS GLACIOS |
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Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2700 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm |
Specimen holder | Cryogen: NITROGEN |
Image recording | Average exposure time: 2.5 sec. / Electron dose: 43.8 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Symmetry | Point symmetry: C3 (3 fold cyclic) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 2.96 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 319575 / Symmetry type: POINT | ||||||||||||||||||||||||
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