UniProt functional annotation for P06762

UniProt code: P06762.

Organism:		Rattus norvegicus (Rat).
Taxonomy:		Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; Murinae; Rattus.
Function:		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. Exhibits cytoprotective effects since excess of free heme sensitizes cells to undergo apoptosis.
Catalytic activity:		Reaction=heme b + 3 O2 + 3 reduced [NADPH--hemoprotein reductase] = biliverdin IXalpha + CO + Fe(2+) + H(+) + 3 H2O + 3 oxidized [NADPH-- hemoprotein reductase]; Xref=Rhea:RHEA:21764, Rhea:RHEA-COMP:11964, Rhea:RHEA-COMP:11965, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379, ChEBI:CHEBI:17245, ChEBI:CHEBI:29033, ChEBI:CHEBI:57618, ChEBI:CHEBI:57991, ChEBI:CHEBI:58210, ChEBI:CHEBI:60344; EC=1.14.14.18; Evidence={ECO:0000250|UniProtKB:O48782};
Subcellular location:		Microsome. Endoplasmic reticulum membrane {ECO:0000250}; Peripheral membrane protein; Cytoplasmic side.
Induction:		Heme oxygenase 1 activity is highly inducible by its substrate heme and by various non-heme substances such as heavy metals, bromobenzene, and endotoxin.
Similarity:		Belongs to the heme oxygenase family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.