Predicted to enable several functions, including complement component C3b binding activity; heparan sulfate proteoglycan binding activity; and heparin binding activity. Involved in several processes, including cellular response to hydrogen peroxide; cellular response to interferon-gamma; and cellular response to lipopolysaccharide. Located in several cellular components, including extracellular space; nucleus; and plasma membrane. Used to study atypical hemolytic-uremic syndrome. Biomarker of amphetamine abuse; membranous glomerulonephritis; obstructive jaundice; proteinuria (multiple); and retinal degeneration. Human ortholog(s) of this gene implicated in several diseases, including atypical hemolytic-uremic syndrome; eye disease (multiple); hemolytic-uremic syndrome; lupus nephritis; and systemic lupus erythematosus. Orthologous to several human genes including CFH (complement factor H). [provided by Alliance of Genome Resources, Apr 2022]