Cubic F432 crystals of recombinant mouse L-chain apoferritin were obtained
by the hanging-drop technique with ammonium sulfate and cadmium sulfate as
precipitants. The structure was refined to 2.1 and 1.6 Angstrom resolution
from data obtained at room temperature and under cryogenic conditions, resp
ectively. The structure of an eight-amino-acid loop insertion in the mouse
sequence is found to be highly disordered both at room temperature and at l
ow temperature.