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Yorodumi- PDB-6opo: Symmetric model of CD4- and 17-bound B41 HIV-1 Env SOSIP in compl... -
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-Basic information
Entry | Database: PDB / ID: 6opo | ||||||||||||
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Title | Symmetric model of CD4- and 17-bound B41 HIV-1 Env SOSIP in complex with DDM | ||||||||||||
Components |
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Keywords | VIRAL PROTEIN/Immune System / HIV-1 / Env / CD4 / receptor-bound state / detergent / DDM / VIRAL PROTEIN / VIRAL PROTEIN-Immune System complex | ||||||||||||
Function / homology | Function and homology information helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / T cell selection / MHC class II protein binding / regulation of T cell activation / interleukin-15-mediated signaling pathway / cellular response to granulocyte macrophage colony-stimulating factor stimulus / positive regulation of kinase activity ...helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / T cell selection / MHC class II protein binding / regulation of T cell activation / interleukin-15-mediated signaling pathway / cellular response to granulocyte macrophage colony-stimulating factor stimulus / positive regulation of kinase activity / positive regulation of monocyte differentiation / Nef Mediated CD4 Down-regulation / Alpha-defensins / extracellular matrix structural constituent / T cell receptor complex / Other interleukin signaling / enzyme-linked receptor protein signaling pathway / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / regulation of calcium ion transport / macrophage differentiation / Generation of second messenger molecules / T cell differentiation / PD-1 signaling / positive regulation of protein kinase activity / Binding and entry of HIV virion / coreceptor activity / cell surface receptor protein tyrosine kinase signaling pathway / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / positive regulation of interleukin-2 production / positive regulation of calcium-mediated signaling / protein tyrosine kinase binding / host cell endosome membrane / T cell activation / Vpu mediated degradation of CD4 / calcium-mediated signaling / clathrin-coated endocytic vesicle membrane / positive regulation of peptidyl-tyrosine phosphorylation / positive regulation of T cell activation / transmembrane signaling receptor activity / Cargo recognition for clathrin-mediated endocytosis / Downstream TCR signaling / MHC class II protein complex binding / Clathrin-mediated endocytosis / signaling receptor activity / virus receptor activity / clathrin-dependent endocytosis of virus by host cell / positive regulation of canonical NF-kappaB signal transduction / defense response to Gram-negative bacterium / adaptive immune response / positive regulation of MAPK cascade / positive regulation of ERK1 and ERK2 cascade / positive regulation of viral entry into host cell / early endosome / cell surface receptor signaling pathway / viral protein processing / cell adhesion / immune response / positive regulation of protein phosphorylation / membrane raft / endoplasmic reticulum lumen / external side of plasma membrane / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / lipid binding / viral envelope / endoplasmic reticulum membrane / virion attachment to host cell / apoptotic process / protein kinase binding / host cell plasma membrane / positive regulation of DNA-templated transcription / structural molecule activity / virion membrane / enzyme binding / signal transduction / protein homodimerization activity / zinc ion binding / identical protein binding / plasma membrane Similarity search - Function | ||||||||||||
Biological species | Human immunodeficiency virus 1 Homo sapiens (human) | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.5 Å | ||||||||||||
Authors | Ozorowski, G. / Torres, J.L. / Ward, A.B. | ||||||||||||
Funding support | United States, 3items
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Citation | Journal: Cell Rep / Year: 2020 Title: A Strain-Specific Inhibitor of Receptor-Bound HIV-1 Targets a Pocket near the Fusion Peptide. Authors: Gabriel Ozorowski / Jonathan L Torres / Diogo Santos-Martins / Stefano Forli / Andrew B Ward / Abstract: Disruption of viral fusion represents a viable, albeit under-explored, target for HIV therapeutics. Here, while studying the receptor-bound envelope glycoprotein conformation by cryoelectron ...Disruption of viral fusion represents a viable, albeit under-explored, target for HIV therapeutics. Here, while studying the receptor-bound envelope glycoprotein conformation by cryoelectron microscopy (cryo-EM), we identify a pocket near the base of the trimer containing a bound detergent molecule and perform in silico drug screening by using a library of drug-like and commercially available molecules. After down-selection, we solve cryo-EM structures that validate the binding of two small molecule hits in very similar manners to the predicted binding poses, including interactions with aromatic residues within the fusion peptide. One of the molecules demonstrates low micromolar inhibition of the autologous virus by using a very rare phenylalanine in the fusion peptide and stabilizing the surrounding region. This work demonstrates that small molecules can target the fusion process, providing an additional target for anti-HIV therapeutics, and highlights the need to explore how fusion peptide sequence variations affect receptor-mediated conformational states across diverse HIV strains. #1: Journal: Biorxiv / Year: 2020 Title: A strain-specific inhibitor of receptor-bound HIV-1 targets a pocket near the fusion peptide and offers a template for drug design Authors: Ozorowski, G. / Torres, J.L. / Santos-Martins, D. / Forli, S. / Ward, A.B. | ||||||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6opo.cif.gz | 567 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6opo.ent.gz | 446.5 KB | Display | PDB format |
PDBx/mmJSON format | 6opo.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6opo_validation.pdf.gz | 3.2 MB | Display | wwPDB validaton report |
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Full document | 6opo_full_validation.pdf.gz | 3.3 MB | Display | |
Data in XML | 6opo_validation.xml.gz | 84 KB | Display | |
Data in CIF | 6opo_validation.cif.gz | 126.5 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/op/6opo ftp://data.pdbj.org/pub/pdb/validation_reports/op/6opo | HTTPS FTP |
-Related structure data
Related structure data | 20151MC 6opnC 6oppC 6opqC 6x5bC 6x5cC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Envelope glycoprotein ... , 2 types, 6 molecules ADJBFM
#1: Protein | Mass: 58872.902 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: B3UES2 #3: Protein | Mass: 17357.824 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Human immunodeficiency virus 1 / Strain: B41 / Gene: env / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: B3UEZ6 |
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-Protein , 1 types, 3 molecules CGN
#4: Protein | Mass: 23039.172 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CD4 / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: P01730 |
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-Antibody , 2 types, 6 molecules LEKHIO
#2: Antibody | Mass: 23425.869 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293F / Production host: Homo sapiens (human) #5: Antibody | Mass: 24484.455 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293F / Production host: Homo sapiens (human) |
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-Sugars , 5 types, 51 molecules
#6: 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 #7: Polysaccharide | Source method: isolated from a genetically manipulated source #8: Polysaccharide | Source method: isolated from a genetically manipulated source #9: Sugar | ChemComp-NAG / #10: Sugar | |
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-Details
Has ligand of interest | Y |
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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 |
-Sample preparation
Component | Name: HIV-1 Env B41 SOSIP in complex with soluble CD4, 17b Fab and DDM Type: COMPLEX / Entity ID: #1-#5 / Source: MULTIPLE SOURCES | ||||||||||||||||
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Molecular weight | Value: 0.63 MDa / Experimental value: NO | ||||||||||||||||
Source (natural) | Organism: Human immunodeficiency virus 1 | ||||||||||||||||
Source (recombinant) | Organism: Homo sapiens (human) | ||||||||||||||||
Buffer solution | pH: 7.4 / Details: DDM added shortly (<5 minutes) prior to freezing. | ||||||||||||||||
Buffer component |
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Specimen | Conc.: 5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||
Specimen support | Grid material: COPPER / Grid type: C-flat-2/2 4C | ||||||||||||||||
Vitrification | Instrument: HOMEMADE PLUNGER / Cryogen name: ETHANE |
-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: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 22500 X / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 10 sec. / Electron dose: 58 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of real images: 1148 |
Image scans | Sampling size: 5 µm / Movie frames/image: 50 |
-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: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 183480 Details: Resolution estimated by convergence between CryoSparc2 loose mask value, and by applying the same CryoSparc2 mask and half maps in Relion PostProcess. Num. of class averages: 3 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 5VN3 Accession code: 5VN3 / Source name: PDB / Type: experimental model |