Figure 4. Structures of scaffold proteins. A – affibody (pdbcode: 1q2n); B – adnectin (pdbcode: 1ttg); C – darpin (pdbcode: 1mj0); G – albumin-binding domain (pdbcode: 1GJT), D – affimer (pdbcode: 4N6T), adapted from [69] (CC BY-SA 4.0).