PMC:7243778 / 33919-34512 JSONTXT

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{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7243778","sourcedb":"PMC","sourceid":"7243778","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7243778","text":"A panel of five humanized single domain antibodies (sdAbs) or nanobodies, 1E2, 2F2, 3F11, 4D8 and 5F8, was recently discovered. These sdAbs bound SARS-CoV-2 tightly but not SARS-CoV, except for 5F8 could bind both viruses but with weaker affinity to SARS-CoV. They also showed neutralization activity against both pseudotyped and authentic SARS-CoV-2. 1E2, 3F11 and 4D8 completely prevented SARS-CoV-2 RBD-ACE2 binding but this effect of 2F2 and 5F8 was only partial. Interestingly, the fusion of the human IgG1 Fc to these sdAbs improved their neutralization activity by 10- to 80-fold 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