AxCesD protein required for bacterial cellulose biosynthesis in Acetobacter xylinum was overexpressed in E. coli, purified and crystallized. Single crystals of SeMet-substituted AxCesD were obtained by the sitting-drop vapordiffusion method. The crystal belongs to the primitive trigonal space group P32, with unit-cell parameters a = b = 77.7 Å, and c = 213.9 Å. The asymmetric unit in the crystal was assumed to contain 8 protein molecules giving the Matthews coefficient (VM ) of 2.54 Å3 Da-1. Se-MAD data were collected to 2.3 Å resolution using synchrotron radiations.