Abstract: The disclosure generally provides a Designed Ankyrin Repeat Protein (DARPin) that specifically binds to an antigen, the DARPin having an N-terminal cap section, at least two Ankyrin Repeat (AR) module sections, and a C-terminal cap section, characterized in that the DARPin has a charge that is less negative than known 5 DARPins. The disclosure also provides for generation of a library of the less negative DARPins.