Predicted to enable metal ion binding activity; scavenger receptor activity; and serine-type endopeptidase activity. Involved in cellular response to interleukin-6. Located in extracellular space and nucleus. Human ortholog(s) of this gene implicated in Kuhnt-Junius degeneration; age related macular degeneration 13; atypical hemolytic-uremic syndrome; complement factor I deficiency; and macular degeneration. Orthologous to human CFI (complement factor I). [provided by Alliance of Genome Resources, Apr 2022]