Abstract
Ferredoxin-NADP(+) oxidoreductase encoded by Bacillus subtilis yumC has been purified and successfully crystallized in complex with NADP(+) in two forms. Diffraction data from crystals of these two forms were collected at resolutions of 1.8 and 1.9 A. The former belonged to space group P2(1)2(1)2, with unit-cell parameters a = 63.90, b = 135.72, c = 39.19 A, and the latter to space group C2, with unit-cell parameters a = 207.47, b = 64.85, c = 61.12 A, beta = 105.82 degrees. The initial structure was determined by the molecular-replacement method using a thioredoxin reductase-like protein as a search model.