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Yorodumi- PDB-8tr3: Cryo-EM structure of HmAb64 scFv in complex with CNE40 SOSIP trimer -
+Open data
-Basic information
Entry | Database: PDB / ID: 8tr3 | ||||||
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Title | Cryo-EM structure of HmAb64 scFv in complex with CNE40 SOSIP trimer | ||||||
Components |
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Keywords | IMMUNE SYSTEM/VIRAL PROTEIN / HIV / Env / glycoprotein / mAb / IMMUNE SYSTEM / IMMUNE SYSTEM-VIRAL PROTEIN complex | ||||||
Function / homology | Function and homology information 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 / host cell plasma membrane / structural molecule activity / virion membrane / plasma membrane Similarity search - Function | ||||||
Biological species | Human immunodeficiency virus 1 Homo sapiens (human) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.74 Å | ||||||
Authors | Chan, K.-W. / Kong, X.P. | ||||||
Funding support | United States, 1items
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Citation | Journal: Nat Commun / Year: 2024 Title: Human CD4-binding site antibody elicited by polyvalent DNA prime-protein boost vaccine neutralizes cross-clade tier-2-HIV strains. Authors: Shixia Wang / Kun-Wei Chan / Danlan Wei / Xiuwen Ma / Shuying Liu / Guangnan Hu / Saeyoung Park / Ruimin Pan / Ying Gu / Alexandra F Nazzari / Adam S Olia / Kai Xu / Bob C Lin / Mark K ...Authors: Shixia Wang / Kun-Wei Chan / Danlan Wei / Xiuwen Ma / Shuying Liu / Guangnan Hu / Saeyoung Park / Ruimin Pan / Ying Gu / Alexandra F Nazzari / Adam S Olia / Kai Xu / Bob C Lin / Mark K Louder / Krisha McKee / Nicole A Doria-Rose / David Montefiori / Michael S Seaman / Tongqing Zhou / Peter D Kwong / James Arthos / Xiang-Peng Kong / Shan Lu / Abstract: The vaccine elicitation of HIV tier-2-neutralization antibodies has been a challenge. Here, we report the isolation and characterization of a CD4-binding site (CD4bs) specific monoclonal antibody, ...The vaccine elicitation of HIV tier-2-neutralization antibodies has been a challenge. Here, we report the isolation and characterization of a CD4-binding site (CD4bs) specific monoclonal antibody, HmAb64, from a human volunteer immunized with a polyvalent DNA prime-protein boost HIV vaccine. HmAb64 is derived from heavy chain variable germline gene IGHV1-18 and light chain germline gene IGKV1-39. It has a third heavy chain complementarity-determining region (CDR H3) of 15 amino acids. On a cross-clade panel of 208 HIV-1 pseudo-virus strains, HmAb64 neutralized 20 (10%), including tier-2 strains from clades B, BC, C, and G. The cryo-EM structure of the antigen-binding fragment of HmAb64 in complex with a CNE40 SOSIP trimer revealed details of its recognition; HmAb64 uses both heavy and light CDR3s to recognize the CD4-binding loop, a critical component of the CD4bs. This study demonstrates that a gp120-based vaccine can elicit antibodies capable of tier 2-HIV neutralization. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8tr3.cif.gz | 381.1 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8tr3.ent.gz | 304.6 KB | Display | PDB format |
PDBx/mmJSON format | 8tr3.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/tr/8tr3 ftp://data.pdbj.org/pub/pdb/validation_reports/tr/8tr3 | HTTPS FTP |
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-Related structure data
Related structure data | 41569MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Protein , 2 types, 6 molecules ACEBDF
#1: Protein | Mass: 55018.422 Da / Num. of mol.: 3 / Mutation: CNE40 SOSIP mutations Source method: isolated from a genetically manipulated source Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Production host: Homo sapiens (human) / References: UniProt: D7S2E5 #2: Protein | Mass: 17205.479 Da / Num. of mol.: 3 / Mutation: CNE40 SOSIP mutations Source method: isolated from a genetically manipulated source Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Production host: Homo sapiens (human) / References: UniProt: D7S2E5 |
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-Antibody , 2 types, 6 molecules HIJLMN
#3: Antibody | Mass: 13745.402 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human) #4: Antibody | Mass: 11852.093 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human) |
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-Sugars , 2 types, 33 molecules
#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 | 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: 7.4 | ||||||||||||||||||||||||
Specimen | Conc.: 2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Specimen support | Grid material: COPPER / Grid mesh size: 400 divisions/in. | ||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: TFS KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm |
Image recording | Electron dose: 56.76 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
-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: 3.74 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 316221 / Symmetry type: POINT | ||||||||||||||||||||||||||||
Refine LS restraints |
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