Figure 1.
Vitamin B6 metabolism. (a) Pyridoxine, (b) pyridoxal, (c) pyridoxamine, (d) pyridoxine 5′-phosphate, (e) pyridoxal 5′-phosphate, and (f) pyridoxamine 5′-phosphate. PK = pyridoxal kinase; PNPO = pyridox(am)ine 5′-phosphate oxidase.
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