Pentraxins: Structure, Function, and Role in Inflammation

Figure 1

Surface view of the ligand binding (B) face of C-reactive protein.  Each protomer contains a binding site, which is shown occupied by 2 calcium (green) and 1 PC molecule (blue). On the magnified view on the right the major interactions with bound calcium ions and specific amino acids can be seen more clearly. The structure is taken from structure file PDB ID: 1B09 from the NCBI.