FIELD: chemistry; biochemistry.
SUBSTANCE: invention pertains to biotechnology. The invention describes a method of producing a modified vitamin K dependent polypeptide which involves modification of activation peptide which includes at least part of an amino acid sequence of another vitamin K dependent polypeptide and where the said part is at least 3 adjacent amino acids of activation peptide FVII, or 5 adjacent amino acids of activation peptide FX, or 5 adjacent amino acids of activation peptide FIX provided that QSFNDFTR peptide is excluded, or 8 adjacent amino acids of activation prothrombin peptide, or an extension on adjacent amino acids of the activation peptide of the second vitamin K dependent polypeptide which has length at least equal to 15% of the total length of the amino acid sequence of the activation peptide of the second vitamin K dependent polypeptide, in which the second vitamin K dependent polypeptide is selected from a group consisting of protein Z, GAS6 and protein S, and where the second vitamin K dependent polypeptide has longer half-life in plasma. The invention discloses a modified vitamin K dependent polypeptide obtained using the described method and having coagulation activity.
EFFECT: invention enables production of modified vitamin K dependent polypeptides with longer half-life in plasma.
40 cl, 2 dwg, 4 tbl, 7 ex
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