A new crystal form of aspartate aminotransferase (EC 2.6.1.1) isolated
from chicken heart cytosol was prepared. The crystals grown from an a
mmonium sulfate solution containing ethanol belong to the P 2(1)2(1)2(
1) space group with the following unit cell dimensions: a = 62.38 Angs
trom, b = 117.41 Angstrom, c = 124.34 Angstrom. The asymmetric unit of
the unit cell contains one molecule of the enzyme. The crystals diffr
act to 1.8 Angstrom resolution.