Sweet potato purple acid phosphatase/phosphate complex

Phosphate forms an unusual tripodal complex with the Fe-Mn center of sweet potato purple acid phosphatase

citric acid, PEG 6000, isopropanol, phosphate, glycerol, pH 4.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

The biological assembly is a dimer which is contained within the asymmetric unit.