8v5k | pdb_00008v5k

Structure of the Human Respirovirus 3 Fusion Protein Bound to Camelid Nanobodies 4C03 and 4C06

spinqualitylabelsall models 8v5k, resolution 2.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8v5k is a 9 chain structure with sequence from Human respirovirus 3 and Lama glama. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 2.6Å Ligands: NAG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A0A023PFZ0_9MONO Publication Abstract from PubMed Respirovirus 3 is a leading cause of severe acute respiratory infections in vulnerable human populations. Entry into host cells is facilitated by the attachment glycoprotein and the fusion glycoprotein (F). Because of its crucial role, F represents an attractive therapeutic target. Here, we identify 13 F-directed heavy-chain-only antibody fragments that neutralize recombinant respirovirus 3. High-resolution cryo-EM structures of antibody fragments bound to the prefusion conformation of F reveal three distinct, previously uncharacterized epitopes. All three antibody fragments bind quaternary epitopes on F, suggesting mechanisms for neutralization that may include stabilization of the prefusion conformation. Studies in cotton rats demonstrate the prophylactic efficacy of these antibody fragments in reducing viral load in the lungs and nasal passages. These data highlight the potential of heavy-chain-only antibody fragments as effective interventions against respirovirus 3 infection and identify neutralizing epitopes that can be targeted for therapeutic development. Structural basis for potent neutralization of human respirovirus type 3 by protective single-domain camelid antibodies.,Johnson NV, van Scherpenzeel RC, Bakkers MJG, Ramamohan AR, van Overveld D, Le L, Langedijk JPM, Kolkman JA, McLellan JS Nat Commun. 2024 Jun 27;15(1):5458. doi: 10.1038/s41467-024-49757-1. PMID:38937429 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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