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Yorodumi- PDB-6nqd: Cryo-EM structure of T/F100 SOSIP.664 HIV-1 Env trimer in complex... -
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-Basic information
Entry | Database: PDB / ID: 6nqd | |||||||||
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Title | Cryo-EM structure of T/F100 SOSIP.664 HIV-1 Env trimer in complex with 8ANC195 Fab | |||||||||
Components |
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Keywords | VIRAL PROTEIN/IMMUNE SYSTEM / HIV-1 / Env / trimer / VIRAL PROTEIN-IMMUNE SYSTEM complex | |||||||||
Function / homology | Function and homology information immunoglobulin complex / immunoglobulin mediated immune response / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / antigen binding / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / blood microparticle / adaptive immune response ...immunoglobulin complex / immunoglobulin mediated immune response / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / antigen binding / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / blood microparticle / adaptive immune response / 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 / extracellular region / plasma membrane Similarity search - Function | |||||||||
Biological species | Human immunodeficiency virus 1 Homo sapiens (human) | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||
Authors | Fang, Q. / Rossmann, M.G. | |||||||||
Funding support | United States, 1items
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Citation | Journal: Nat Commun / Year: 2019 Title: A sequestered fusion peptide in the structure of an HIV-1 transmitted founder envelope trimer. Authors: Neeti Ananthaswamy / Qianglin Fang / Wadad AlSalmi / Swati Jain / Zhenguo Chen / Thomas Klose / Yingyuan Sun / Yue Liu / Marthandan Mahalingam / Subhash Chand / Sodsai Tovanabutra / Merlin L ...Authors: Neeti Ananthaswamy / Qianglin Fang / Wadad AlSalmi / Swati Jain / Zhenguo Chen / Thomas Klose / Yingyuan Sun / Yue Liu / Marthandan Mahalingam / Subhash Chand / Sodsai Tovanabutra / Merlin L Robb / Michael G Rossmann / Venigalla B Rao / Abstract: The envelope protein of human immunodeficiency virus-1 (HIV-1) and its fusion peptide are essential for cell entry and vaccine design. Here, we describe the 3.9-Å resolution structure of an envelope ...The envelope protein of human immunodeficiency virus-1 (HIV-1) and its fusion peptide are essential for cell entry and vaccine design. Here, we describe the 3.9-Å resolution structure of an envelope protein trimer from a very early transmitted founder virus (CRF01_AE T/F100) complexed with Fab from the broadly neutralizing antibody (bNAb) 8ANC195. The overall T/F100 trimer structure is similar to other reported "closed" state prefusion trimer structures. In contrast, the fusion peptide, which is exposed to solvent in reported closed structures, is sequestered (buried) in the hydrophobic core of the T/F100 trimer. A buried conformation has previously been observed in "open" state structures formed after CD4 receptor binding. The T/F100 trimer binds poorly to bNAbs including the fusion peptide-specific bNAbs PGT151 and VRC34.01. The T/F100 structure might represent a prefusion state, intermediate between the closed and open states. These observations are relevant to mechanisms of HIV-1 transmission and vaccine design. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
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PDBx/mmCIF format | 6nqd.cif.gz | 478.2 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6nqd.ent.gz | 383.1 KB | Display | PDB format |
PDBx/mmJSON format | 6nqd.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6nqd_validation.pdf.gz | 3.3 MB | Display | wwPDB validaton report |
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Full document | 6nqd_full_validation.pdf.gz | 3.3 MB | Display | |
Data in XML | 6nqd_validation.xml.gz | 79.7 KB | Display | |
Data in CIF | 6nqd_validation.cif.gz | 115.9 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/nq/6nqd ftp://data.pdbj.org/pub/pdb/validation_reports/nq/6nqd | HTTPS FTP |
-Related structure data
Related structure data | 0485MC 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
-Protein , 2 types, 6 molecules AEIBFJ
#1: Protein | Mass: 54739.133 Da / Num. of mol.: 3 / Fragment: UNP residues 29-508 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Cell line (production host): HEK293S / Production host: Homo sapiens (human) / References: UniProt: A0A140EMT3 #2: Protein | Mass: 20333.879 Da / Num. of mol.: 3 / Fragment: UNP residues 513-665 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Cell line (production host): HEK293S / Production host: Homo sapiens (human) / References: UniProt: A0A140EMT3 |
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-Antibody , 2 types, 6 molecules CGKDHL
#3: Antibody | Mass: 26153.283 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human) / References: UniProt: S6B2A6 #4: Antibody | Mass: 23460.047 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human) / References: UniProt: P0DOX7 |
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-Sugars , 6 types, 63 molecules
#5: Polysaccharide | Source method: isolated from a genetically manipulated source #6: Polysaccharide | Source method: isolated from a genetically manipulated source #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: Sugar | ChemComp-NAG / |
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-Details
Has protein modification | 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 |
-Sample preparation
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Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 8 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Specimen support | Details: unspecified | ||||||||||||||||||||||||
Vitrification | 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 |
Image recording | Electron dose: 64 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 170716 / Symmetry type: POINT |