IMPROVED FIBRONECTIN-BASED BINDING MOLECULES AND THEIR USE

摘要

The invention provides fibronectin-based binding molecules and methods for introducing donor CDRs into a fibronectin-based binding scaffold, in particular, Fn3. The fibronectin-based binding molecules of the invention may be further conjugated to another moiety, for example, Fc, anti-FcRn, HSA, anti-HSA, and PEG, for improved half life and stability, particularly in mammalian cells. The invention also provides methods for screening such molecules for binding to a target antigen as well as the manufacture and purification of a candidate binder.