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Publication : The antigenic anatomy of SARS-CoV-2 receptor binding domain.

First Author  Dejnirattisai W Year  2021
Journal  Cell Volume  184
Issue  8 Pages  2183-2200.e22
PubMed ID  33756110 Mgi Jnum  J:335893
Mgi Id  MGI:6706295 Doi  10.1016/j.cell.2021.02.032
Citation  Dejnirattisai W, et al. (2021) The antigenic anatomy of SARS-CoV-2 receptor binding domain. Cell 184(8):2183-2200.e22
abstractText  Antibodies are crucial to immune protection against SARS-CoV-2, with some in emergency use as therapeutics. Here, we identify 377 human monoclonal antibodies (mAbs) recognizing the virus spike and focus mainly on 80 that bind the receptor binding domain (RBD). We devise a competition data-driven method to map RBD binding sites. We find that although antibody binding sites are widely dispersed, neutralizing antibody binding is focused, with nearly all highly inhibitory mAbs (IC50 < 0.1 mug/mL) blocking receptor interaction, except for one that binds a unique epitope in the N-terminal domain. Many of these neutralizing mAbs use public V-genes and are close to germline. We dissect the structural basis of recognition for this large panel of antibodies through X-ray crystallography and cryoelectron microscopy of 19 Fab-antigen structures. We find novel binding modes for some potently inhibitory antibodies and demonstrate that strongly neutralizing mAbs protect, prophylactically or therapeutically, in animal models.
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