7l90

BG505 SOSIP.v5.2 N241/N289 in complex with the polyclonal Fab pAbC-8 from animal Rh.33311 (Wk26 time point)

spinqualitylabelsall models 7l90, resolution 4.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7l90 is a 8 chain structure with sequence from Human immunodeficiency virus 1 and Macaca mulatta. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 4.5Å Ligands: BMA, MAN, NAG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Engineered ectodomain trimer immunogens based on BG505 envelope glycoprotein are widely utilized as components of HIV vaccine development platforms. In this study, we used rhesus macaques to evaluate the immunogenicity of several stabilized BG505 SOSIP constructs both as free trimers and presented on a nanoparticle. We applied a cryoEM-based method for high-resolution mapping of polyclonal antibody responses elicited in immunized animals (cryoEMPEM). Mutational analysis coupled with neutralization assays were used to probe the neutralization potential at each epitope. We demonstrate that cryoEMPEM data can be used for rapid, high-resolution analysis of polyclonal antibody responses without the need for monoclonal antibody isolation. This approach allowed to resolve structurally distinct classes of antibodies that bind overlapping sites. In addition to comprehensive mapping of commonly targeted neutralizing and non-neutralizing epitopes in BG505 SOSIP immunogens, our analysis revealed that epitopes comprising engineered stabilizing mutations and of partially occupied glycosylation sites can be immunogenic. Polyclonal antibody responses to HIV Env immunogens resolved using cryoEM.,Antanasijevic A, Sewall LM, Cottrell CA, Carnathan DG, Jimenez LE, Ngo JT, Silverman JB, Groschel B, Georgeson E, Bhiman J, Bastidas R, LaBranche C, Allen JD, Copps J, Perrett HR, Rantalainen K, Cannac F, Yang YR, de la Pena AT, Rocha RF, Berndsen ZT, Baker D, King NP, Sanders RW, Moore JP, Crotty S, Crispin M, Montefiori DC, Burton DR, Schief WR, Silvestri G, Ward AB Nat Commun. 2021 Aug 10;12(1):4817. doi: 10.1038/s41467-021-25087-4. PMID:34376662 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Antibody 3D structures Gp120 3D structures Gp41 3D Structures Monoclonal Antibodies 3D structures

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