Predicted to be involved in blood coagulation; cell killing; and protein homooligomerization. Predicted to act upstream of or within complement activation, alternative pathway; complement activation, classical pathway; and cytolysis. Predicted to be located in extracellular space and plasma membrane. Predicted to be part of membrane attack complex. Is expressed in several structures, including brain; endocrine gland; genitourinary system; liver; and submandibular gland. Human ortholog(s) of this gene implicated in age related macular degeneration 15 and complement component 9 deficiency. Orthologous to human C9 (complement C9). [provided by Alliance of Genome Resources, Apr 2022]