Crystallization and preliminary X-ray diffraction analysis of Bacillus subtilis YwfE, an L-amino-acid ligase

Native and selenomethionine-derivatized (SeMet) crystals of Bacillus subtilis YwfE in the presence of ADP, MgCl₂ and the dipeptide L-Ala-L-Gln were obtained using the hanging-drop vapour-diffusion method.