Rekombinant koagulationsfaktor IX er et enkeltkædet glykoprotein med en molekylemasse på cirka 55. 000 Daltons som er en del af serin protease familien af vitamin K afhængige koagulationsfaktorer.
Recombinant coagulation factor IX is a single chain glycoprotein with an approximate molecular mass of 55,000 Daltons that is a member of the serine protease family of vitamin K-dependent coagulation factors.