Predicted to enable vitamin-K-epoxide reductase (warfarin-sensitive) activity. Predicted to be involved in blood coagulation and vitamin K metabolic process. Predicted to be located in endoplasmic reticulum membrane. Is expressed in several structures, including head; liver; muscle; pleuroperitoneal region; and vertebra. Human ortholog(s) of this gene implicated in combined deficiency of vitamin K-dependent clotting factors 2 and warfarin resistance. Orthologous to human VKORC1 (vitamin K epoxide reductase complex subunit 1).