ALDOC, also as known as fructose bisphosphate C, is a member of the class 1 fructose-biphosphate aldolase family. This protein is a ubiquitous enzyme that catalyzes the reversible aldol cleavage of fructose-bisphosphate and fructose 1-phospate to digydroxyacetone phosphate and either glyceral-dehyde-3-phosphate or glyceraldegyde, respectively. It is expressed specifically in the hippocampus and Purkinje cells of the brain. Recombinant human ALDOC was expressed in E.coli and purified by using conventional chromatography techniques.