7X8Q

Frizzled-10 CRD in complex with F10_A9 Fab

Summary for 7X8Q

• Entry DOI: 10.2210/pdb7x8q/pdb
• Descriptor: Frizzled-10, Antibody F10_A9 Fab, Light chain, Antibody F10_A9 Fab, Heavy chain, ... (4 entities in total)
• Functional Keywords: antibody, signaling protein
• Biological source: Homo sapiens (human); More
• Total number of polymer chains: 6
• Total formula weight: 125593.62

Authors

Ge, Q.,Wang, Q. (deposition date: 2022-03-14, release date: 2023-01-18, Last modification date: 2024-10-23)

Primary citation

Ge, Q.,Teng, M.,Li, X.,Guo, Q.,Tao, Y.
An epitope-directed selection strategy facilitating the identification of Frizzled receptor selective antibodies.
Structure, 31:33-43.e5, 2023

PubMed Abstract: The lack of incorporating epitope information into the selection process makes the conventional antibody screening method less effective in identifying antibodies with desired functions. Here, we developed an epitope-directed antibody selection method by designing a directed library favoring the target epitope and a precise "counter" antigen for clearing irrelevant binders in the library. With this method, we successfully isolated an antibody, pF7_A5, that targets the less conserved region on the FZD2/7 CRD as designed. Guided by the structure of pF7_A5-FZD2, a further round of evolution was conducted together with the "counter" antigen selection strategy, and ultimately, an FZD2-specific antibody and an FZD7-preferred antibody were obtained. Because of targeting the predefined functional site, all these antibodies exhibited the expected modulatory activity on the Wnt pathway. Together, the method developed here will be useful in antibody drug discovery, and the identified FZD antibodies will have clinical potential in FZD-related cancer therapy.

PubMed: 36513066
DOI: 10.1016/j.str.2022.11.009

Experimental method

X-RAY DIFFRACTION (2.65 Å)