5.3.1.27 diffraction to 1.7 A, space group P6522 or P6122 5.3.1.27 diffraction to 2.0 A resolution. MJ1247 is an alpha/beta structure consisting of a five-stranded parallel beta-sheet flanked on both sides by alpha-helices, forming a three-layered alpha-beta-alpha sandwich. The fold represents the nucleotide binding motif of a flavodoxin type. Protein forms a tetramer in the crystal an in solution and each monomer has a folding similar to the isomerase domain of glucosamine 6-phosphate synthase