HMOX1: Heme oxygenase cleaves the heme ring at the alpha methene bridge to form biliverdin. Biliverdin is subsequently converted to bilirubin by biliverdin reductase. Under physiological conditions, the activity of heme oxygenase is highest in the spleen, where senescent erythrocytes are sequestrated and destroyed. Heme oxygenase 1 activity is highly inducible by its substrate heme and by various non-heme substances such as heavy metals, bromobenzene, endotoxin, oxidizing agents and UVA. Expressed at higher levels in renal cancer tissue than in normal tissue. Belongs to the heme oxygenase family.
Protein type: Cofactor and Vitamin Metabolism - porphyrin and chlorophyll; EC 1.14.99.3; Oxidoreductase
Cellular Component: endoplasmic reticulum membrane; perinuclear region of cytoplasm; endoplasmic reticulum; plasma membrane; nucleolus; caveola; cytosol; nucleus
Molecular Function: protein binding; signal transducer activity; enzyme binding; protein homodimerization activity; metal ion binding; phospholipase D activity; heme binding; oxidoreductase activity; heme oxygenase (decyclizing) activity
Biological Process: response to nicotine; cell death; negative regulation of smooth muscle cell proliferation; positive regulation of smooth muscle cell proliferation; negative regulation of mast cell degranulation; heme metabolic process; negative regulation of cell proliferation; erythrocyte homeostasis; regulation of transcription factor activity; heme catabolic process; regulation of blood pressure; phospholipid metabolic process; small GTPase mediated signal transduction; negative regulation of mast cell cytokine production; angiogenesis; negative regulation of neuron apoptosis; regulation of transcription from RNA polymerase II promoter in response to oxidative stress; healing during inflammatory response; protein homooligomerization; positive regulation of I-kappaB kinase/NF-kappaB cascade; negative regulation of transcription factor activity; heme oxidation; cellular response to nutrient; negative regulation of DNA binding; positive regulation of angiogenesis; iron ion homeostasis; DNA damage response, signal transduction resulting in induction of apoptosis; response to hydrogen peroxide; response to estrogen stimulus; response to hypoxia; response to oxidative stress
Show more