Purity: > 90% by SDS - PAGE Format: Liquid. In 20mM Tris-HCl buffer (pH 8.0) containing,10% glycerol. Ribokinase, also known as RBKS, belongs to the pfkB family of carbohydrate kinases. It phosphorylates ribose to form ribose-5-phosphate in the presence of ATP and magnesium as a first step in ribose metabolism. Recombinant human RBKS protein, fused to His-tag at N-terminus, was expressed in E.coli and purified by using conventional chromatography techniques.