Predicted to enable copper ion binding activity and oxidoreductase activity. Involved in blood coagulation, intrinsic pathway. Located in extracellular space. Used to study factor VIII deficiency; hemarthrosis; and hyperhomocysteinemia. Human ortholog(s) of this gene implicated in factor VIII deficiency. Orthologous to human F8 (coagulation factor VIII). [provided by Alliance of Genome Resources, Apr 2022]