Family
Phosphopentose epimerase belongs to two protein families of increasing hierarchy. This enzyme belongs to the isomerase family which acts on carbohydrates and their derivatives. In addition, the Structural Classification of Proteins database has defined the “ribulose phosphate binding” superfamily for which this epimerase is a member. Other proteins included in this superfamily are 5‘-monophosphate decarboxylase (OMPDC), and 3-keto-l-gulonate 6-phosphate decarboxylase (KGPDC).
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