+Open data
-Basic information
Entry | Database: PDB / ID: 8gpg | ||||||
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Title | HIV-1 Env X18 UFO in complex with F6 Fab | ||||||
Components |
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Keywords | VIRAL PROTEIN / Antibody / HIV-1 / Env protein / Complex | ||||||
Biological species | Homo sapiens (human) Human immunodeficiency virus 1 | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.1 Å | ||||||
Authors | Niu, J. / Xu, Y.W. / Yang, B. | ||||||
Funding support | China, 1items
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Citation | Journal: Nat Commun / Year: 2023 Title: Structures and immune recognition of Env trimers from two Asia prevalent HIV-1 CRFs. Authors: Jun Niu / Qi Wang / Wenwen Zhao / Bing Meng / Youwei Xu / Xianfang Zhang / Yi Feng / Qilian Qi / Yanling Hao / Xuan Zhang / Ying Liu / Jiangchao Xiang / Yiming Shao / Bei Yang / Abstract: Structure-guided immunofocusing HIV-1 vaccine design entails a comprehensive understanding of Envs from diverse HIV-1 subtypes, including circulating recombinant forms (CRFs). Here, we present the ...Structure-guided immunofocusing HIV-1 vaccine design entails a comprehensive understanding of Envs from diverse HIV-1 subtypes, including circulating recombinant forms (CRFs). Here, we present the cryo-EM structures of Envs from two Asia prevalent CRFs (CRF01_AE and CRF07_BC) at 3.0 and 3.5 Å. We compare the structures and glycosylation patterns of Envs from different subtypes and perform cross-clade statistical analyses to reveal the unique features of CRF01_AE V1 region, which are associated with the resistance to certain bNAbs. We also solve a 4.1 Å cryo-EM structure of CRF01_AE Env in complex with F6, the first bNAb from CRF01_AE-infected individuals. F6 recognizes a gp120-gp41 spanning epitope to allosterically destabilize the Env trimer apex and weaken inter-protomer packing, which in turn hinders the receptor binding and induces Env trimer disassembly, demonstrating a dual mechanism of neutralization. These findings broaden our understanding of CRF Envs and shed lights on immunofocusing HIV-1 vaccine design. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8gpg.cif.gz | 379.7 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8gpg.ent.gz | 297.1 KB | Display | PDB format |
PDBx/mmJSON format | 8gpg.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8gpg_validation.pdf.gz | 1.9 MB | Display | wwPDB validaton report |
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Full document | 8gpg_full_validation.pdf.gz | 1.9 MB | Display | |
Data in XML | 8gpg_validation.xml.gz | 66.6 KB | Display | |
Data in CIF | 8gpg_validation.cif.gz | 97.2 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/gp/8gpg ftp://data.pdbj.org/pub/pdb/validation_reports/gp/8gpg | HTTPS FTP |
-Related structure data
Related structure data | 34192MC 8gp5C 8gpiC 8gpjC 8gpkC C: citing same article (ref.) M: map data used to model this data |
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-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Protein , 1 types, 3 molecules XYZ
#3: Protein | Mass: 69513.727 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Human immunodeficiency virus 1 / Production host: Cricetulus griseus (Chinese hamster) |
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-Antibody , 2 types, 6 molecules ACEBDF
#1: Antibody | Mass: 25333.791 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Cricetulus griseus (Chinese hamster) #2: Antibody | Mass: 24109.902 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Cricetulus griseus (Chinese hamster) |
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-Sugars , 3 types, 30 molecules
#4: Polysaccharide | Source method: isolated from a genetically manipulated source #5: 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 #6: Sugar | ChemComp-NAG / |
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-Details
Has ligand of interest | N |
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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: 7.5 / Details: 25 mM HEPES pH 7.5, 300 mM NaCl | ||||||||||||||||||||||||
Specimen | Conc.: 8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
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: SPOT SCAN |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 22500 X / Nominal defocus max: 2500 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm |
Image recording | Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-Processing
Software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 4.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 350799 / Symmetry type: POINT | ||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
Displacement parameters | Biso mean: 89.6 Å2 | ||||||||||||||||||||||||
Refine LS restraints |
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