Abstract: Method for the extraction and insolubilization of a vitamin-K-dependent carboxylase complex from biological material, for instance a bovine liver homogenate, which can be used for the conversion of, for example, precursors of the blood coagulation factors II, VII, X and especially IX prepared via recombinant DNA-technology, the insolubilized carboxylase complex, as well as the prepared biologically active blood coagulation factors to be used in pharmaceutical compositions.