摘要:
A transformant is prepared to insert at least a gene expression cassette comprising a gene involved in the synthesis of 2-deoxy-scyllo-inosose into E. coli as host cells. A 2-deoxy-scyllo-inosose is synthesized from D-glucose, oligosaccharide, polysaccharide, starch and rice bran, using the transformant. A culture solution containing the 2-deoxy-scyllo-inosose is treated with a mixed bed or double bed type column comprising a hydrogen form of strong acidic cation exchange resin and an organic ion form of basic anion exchange resin. The 2-deoxy-scyllo-inosose as purified is reacted with trimethoxymethane to convert into 2-deoxy-scyllo-inosose dimethylketal, and the dimethylketal is crystallized and purified. Then, DOI is highly purified through hydrolyzing the dimethylketal in the presence of acid.
摘要:
A new fusion protein which can specifically suppress the autoantibodies, which can effectively prevent or treat the autoimmune disease of autoantibody type, and which can be expressed in an amount sufficient for industrial production. A fusion protein, characterized in that, a protein (X) containing a site recognized by autoantibodies which are a cause of the autoimmune disease of autoantibody type is connected to a protein (A) containing a fragment of the antibody heavy chain constant region which exhibits the antibody-dependent cellular cytotoxicity with a linker peptide (L) consisting of one or more amino acid(s), wherein the protein (X), the linker peptide (L) and the protein (A) are connected in this order by means of peptide bond from N terminal to C terminal.
摘要:
A new fusion protein which can specifically suppress the autoantibodies, which can effectively prevent or treat the autoimmune disease of autoantibody type, and which can be expressed in an amount sufficient for industrial production. A fusion protein, characterized in that, a protein (X) containing a site recognized by autoantibodies which are a cause of the autoimmune disease of autoantibody type is connected to a protein (A) containing a fragment of the antibody heavy chain constant region which exhibits the antibody-dependent cellular cytotoxicity with a linker peptide (L) consisting of one or more amino acid(s), wherein the protein (X), the linker peptide (L) and the protein (A) are connected in this order by means of peptide bond from N terminal to C terminal.
摘要:
A transformant is prepared to insert at least a gene expression cassette comprising a gene involved in the synthesis of 2-deoxy-scyllo-inosose into E. coli as host cells. A 2-deoxy-scyllo-inosose is synthesized from D-glucose, oligosaccharide, polysaccharide, starch and rice bran, using the transformant. A culture solution containing the 2-deoxy-scyllo-inosose is treated with a mixed bed or double bed type column comprising a hydrogen form of strong acidic cation exchange resin and an organic ion form of basic anion exchange resin. The 2-deoxy-scyllo-inosose as purified is reacted with trimethoxymethane to convert into 2-deoxy-scyllo-inosose dimethylketal, and the dimethylketal is crystallized and purified. Then, DOI is highly purified through hydrolyzing the dimethylketal in the presence of acid.