Parameters of interaction between FAD and NADP+ binding domains of the different FNRsa.

aThe parameters were calculated by using the PISA server tool as described in the Materials and Methods section.bΔGint indicates the solvation free energy gained upon formation of the assembly and is calculated as the difference in the total solvation energy of the isolated and assembled structures. This value does not include the effect of satisfied hydrogen bonds and salt bridges across the interfaces of the assembly.cΔGdiss indicates the free energy of assembly dissociation, which corresponds to the free energy difference between dissociated and associated states. Positive ΔGdiss values indicate that an external driving force should be applied to dissociate the assembly.dNHB indicates the number of potential hydrogen bonds across the interface.eNSB indicates the number of potential salt bridges across the interface.