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X-ray crystallographic data from four crystal forms of Escherichia coli
bacterioferritin show that the molecule has a diameter in the range 119 to 128
A. Molecules are composed of 24 subunits arranged in 432 symmetry. In both size
and symmetry the molecule resembles ferritin from eukaryotes. The four crystal
forms are monoclinic, space group P2(1) with unit cell dimensions a = 118.7 A, b
= 211.6 A, c = 123.3 A and beta = 119.1 degrees; orthorhombic, C222(1), a =
128.7 A, b = 197.1 A, c = 202.8 A; tetragonal, P4(2)2(1)2, a = b = 210.6 A, c =
145.0 A and cubic, I432, a = 146.9 A.
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