Crystallization and preliminary crystallographic analysis of bacterial fructosyl amino acid oxidase

Bacterial fructosyl amino acid oxidase [fructosyl alpha-L-amino acid:oxygen oxidoreductase (defructosylating); EC 1.5.3] has been crystallized by the hanging-drop vapour-diffusion technique using sodium citrate as the precipitant. Two types of crystals were grown: one type are rhombic prismatic yellow crystals that belong to space group C2 with unit-cell parameters a = 101.08, b = 63.36, c = 83.07 A, beta = 108.80 degrees and diffract to at least 1.8 A resolution, while the second type are rod-like crystals that belong to space group P4(1)22 or P4(3)22 with unit-cell parameters a = b = 119.09, c = 164.66 A and diffract to 2.7 A resolution.