Purity > 90% as determined by SDS-PAGE. MW: 34.9kDa. Full Length: 1-289aa. N-terminal 6xHis-tagged. Mus musculus (Mouse). He oxygenase cleaves the he ring at the alpha methene bridge to form biliverdin. Biliverdin is subsequently converted to bilirubin by biliverdin reductase. Under physiological conditions, the activity of he oxygenase is highest in the spleen, where senescent erythrocytes are sequestrated and destroyed. Exhibits cytoprotective effects since excess of free he sensitizes cells to undergo apoptosis.