The present invention relates to a method for producing a mature von Willebrand Factor (VWF) from von Willebrand Factor pro-peptide comprising the steps: - immobilizing VWF pro-peptide on an ion exchange resin, incubating the immobilized VWF pro-peptide with furin to obtain immobilized mature VWF, and - isolating mature VWF from the ion exchange resin by elution.
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