Expression of the enzymes involved in vitamin B6 metabolism in human cell lines and tissue lysates.

Actin was used as a loading control (cell lysates only). Depicted are representations of at least duplicates. PK = pyridoxal kinase. PNPO = pyridox(am)ine phosphate oxidase. PLP-Ph = PLP-phosphatase. Small Int = small intestine. HepG2 = HepG2 cells. Caco-2 = Caco-2 cells.