Crystals containing a single subunit type of Panulirus interruptus haemocyanin

Crystals have been grown of the 94K subunit of Panulirus interruptus haemocyanin. The best crystals were obtained by the "two-layer liquid diffusion technique" with ammonium sulphate solutions as precipitating agent. The crystals have space group P6(3)22 with cell dimensions a = b = 195.6 A and c = 158.0 A. The diffraction pattern extends to a resolution of approximately 3.0 A resolution. The unit cell may contain two hexameric molecules with 32 symmetry, i.e. one subunit per asymmetric unit.