Molecule of the Month: SARS-CoV-2 Spike and Antibodies
Structural biologists are revealing the many ways that antibodies recognize SARS-CoV-2
Exploring the Structure
SARS-CoV-2 Spike and Antibody Cocktails
Structural biologists are now exploring how cocktails of antibodies could work together to block the virus. Two examples are shown here. On the left, from PDB ID 7cwu, P17 blocks the receptor-binding site and FC05 binds to the N-terminal domain. On the right, from PDB ID 7cwn, P17 is combined with H014, which binds to the lower site on the receptor-binding domain. To explore these structures in more detail, click on the image for an interactive JSmol.
Topics for Further Discussion
- Many additional structures of antibodies bound to spike and to spike domains, as well as structures of antibodies and spike by themselves, can be found in the PDB archive.
- While you’re exploring these structures, you need to use some imagination. As noted in the first figure, all of these structures include the variable domains of the antibodies, but only some modeled coordinates for the constant domains. In addition, the membrane-spanning portions of the spike are missing, and typically only the first few sugars are included at the many sites of glycosylation.
April 2021, David Goodselldoi:10.2210/rcsb_pdb/mom_2021_4