Figure 2 - full size

Figure 2.
Fig. 2. Out-of-plane displacement of the porphyrin ring atoms from the porphyrin least-squares plane for MP (blue) and NMP (pink) bound to antibody 7G12. The porphyrin atoms that are involved in the same pyrrole ring are connected to give a pentagon shape. A-D denote the porphyrin pyrroles as in Fig. 1C, and N denotes the pyrrole nitrogen atoms of the porphyrin molecule.