Glycerol 3-phosphate oxidase

UniProtKB accession:  P75063

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UniProtKB description:  Catalyzes the oxidation of glycerol 3-phosphate to dihydroxyacetone phosphate (DHAP), with a reduction of O2 to H2O2. The formation of hydrogen peroxide by this enzyme is crucial for cytotoxic effects of M.pneumoniae on host cells. Is involved in the metabolism of glycerol and is essential for glycerol utilization; glycerol is one of the few carbon sources that can be utilized by M.pneumoniae for growth (PubMed:19028882). To a lesser extent, is also able to use glyceraldehyde 3-phosphate (GAP), an intermediate in the glycolysis pathway, as a substrate (but the structure of the product has not been elucidated). Therefore, in the absence of glycerol, GAP may serve as a substrate in the GlpO reaction to supply H2O2 during mycoplasma infection (PubMed:25712468). Does not show any dehydrogenase activity with NAD(+) (PubMed:19028882).