Model DARPin selections using our streamlined mRNA display protocol. Four binary
libraries containing mRNAs encoding H10-2-G3 (H: a Her2 binder) and Off7 (O: a MBP binder) at
different molar ratios (1:10, 1:100, 1:1,000, and 1:10,000) were subjected to two to three rounds of
selections against immobilized Her2. The original library (Ori.) and selective enrichment of
H10-2-G3 in the RT-PCR product after each round of mRNA display (R1, R2, and R3) is visualized by
agarose gel electrophoresis. Each selection round took two days in the laboratory.