Crystallization and preliminary X-ray characterization of a ferritin from the hyperthermophilic archaeon and anaerobe Pyrococcus furiosus

Crystals of the title protein have been produced and preliminary structural analysis has been carried out. The crystals belong to the orthorhombic space group C222₁, with unit-cell parameters a = 258.1, b = 340.1, c = 266.5 Å. The protein forms a 24-mer of 20 kDa subunits, which assemble with 432 non-crystallographic symmetry. A total of 36 monomers are found in the asymmetric unit, corresponding to one and a half 24-mers.