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    • 23. 发明公开
    • Novel basic polypeptides and a method of producing thereof
    • 新型基础聚合物及其生产方法
    • EP0147175A3
    • 1987-02-25
    • EP84308923
    • 1984-12-19
    • SUNTORY KABUSHIKI KAISHA, also known as SUNTORY LTD.
    • Okada, TsutomuTanaka, ShojiOshima, TakehiroYamamoto, Kazumori
    • C12P21/02C12N15/00C07K15/26A61K45/02
    • C07K14/57A61K38/00
    • A novel basic polypeptide having an immune interferon-like activity consists of 131 or 132 amino acid residues and has an apparent molecular weight of about 16,000 as measured by SDS electrophresis and of about 17,000 as measured by the high performance liquid chromatographic molecular sieve method; an isoelectric point (PI value) in the nge of 9.2-10.0; a cystein or methionine residue as the amino terminal; a lysine residue as the carboxy terminal; and the amino acid composition: Asx 20, Thr 5, Ser 9, Glx 16, Pro 2, Gly 4, Ala 7, Cys 2, Val 8, Met 3 or 4, Ile 7, Leu 9, Tyr 5, Phe 9, Lys 19, His 2, Arg 3 and Trp 1 (Asx including Asp and Asn, and Glx including Glu and Gin). The polypeptide is produced by cultivating a microorganism such as Escher ichia coli transformed with a plasmid containing a chemically synthesized DNA sequence coding for the corresponding amino acid sequence and extracting the polypeptide from the culture.
    • 具有免疫干扰素样活性的新型碱基多肽由131或132个氨基酸残基组成,并且通过SDS电泳法测量的表观分子量为约16,000,通过高效液相色谱分子筛法测量为约17,000; 等电点(PI值)在9.2-10.0的范围内; 作为氨基末端的半胱氨酸或甲硫氨酸残基; 赖氨酸残基作为羧基末端; 氨基酸组成:Asx 20,Thr 5,Ser 9,Glx 16,Pro 2,Gly 4,Ala 7,Cys 2,Val 8,Met 3或4,Ile 7,Leu 9,Tyr 5,Phe 9, Lys 19,His 2,Arg 3和Trp 1(Asx包括Asp和Asn,Glx包括Glu和Gln)。 通过培养用包含编码相应氨基酸序列的化学合成的DNA序列的质粒转化的微生物,从培养物中提取多肽来产生多肽。