Figure 1
From: The domain swapping of human cystatin C induced by synchrotron radiation

Structure of human cystatin C and schematic representation of the domain swapping process and formation of dimers from monomers. Structure of the covalently stabilized HCC monomer (PDB code: 3GAX)30. Structures of three HCC dimers with different conformations (from the top: HCC L68V, PDB code: 3QRD; native form 1 (cubic polymorph) HCC, PDB code: 1G96; and native form 2 (tetragonal polymorph) HCC, PDB code: 1TIJ)4,6.