Species Human Entrez 55163 | Human Mouse Ensembl ENSG00000108439 | |
 | ||
Aliases PNPO, HEL-S-302, PDXPO, pyridoxamine 5'-phosphate oxidase External IDs MGI: 2144151 HomoloGene: 5364 GeneCards: PNPO | ||
Pyridoxine-5'-phosphate oxidase is an enzyme that in humans is encoded by the PNPO gene.
Vitamin B6, or pyridoxal 5-prime-phosphate (PLP), is critical for normal cellular function, and some cancer cells have notable differences in vitamin B6 metabolism compared to their normal counterparts. The rate-limiting enzyme in vitamin B6 synthesis is pyridoxine-5-prime-phosphate (PNP) oxidase (PNPO; EC 1.4.3.5).[supplied by OMIM]
Model organisms
Model organisms have been used in the study of PNPO function. A conditional knockout mouse line, called Pnpotm1a(KOMP)Wtsi was generated as part of the International Knockout Mouse Consortium program — a high-throughput mutagenesis project to generate and distribute animal models of disease to interested scientists.
Male and female animals underwent a standardized phenotypic screen to determine the effects of deletion. Twenty four tests were carried out on mutant mice and two significant abnormalities were observed. No homozygous mutant embryos were identified during gestation, and therefore none survived until weaning. The remaining tests were carried out on heterozygous mutant adult mice; no additional significant abnormalities were observed in these animals.