Recombinantly produced spider silk
    37.
    发明授权
    Recombinantly produced spider silk 失效
    重组生产蜘蛛丝

    公开(公告)号:US06268169B1

    公开(公告)日:2001-07-31

    申请号:US08556978

    申请日:1995-12-11

    IPC分类号: C12N121

    CPC分类号: C07K14/43518 F02B2075/027

    摘要: The invention relates to novel spider silk protein analogs derived from the amino acid consensus sequence of repeating units found in the natural spider dragline of Nephila clavipes. More specifically, synthetic spider dragline has been produced from E. coli and Bacillus subtilis recombinant expression systems wherein expressions from E. coli is at levels greater than 1 mg full-length polypeptide per gram of cell mass.

    摘要翻译: 本发明涉及衍生自Nephila clavipes天然蜘蛛牵引线中重复单元的氨基酸共有序列的新型蜘蛛丝蛋白类似物。 更具体地,已经从大肠杆菌和枯草芽孢杆菌重组表达系统产生了合成蜘蛛牵引线,其中来自大肠杆菌的表达水平每克细胞质量大于1mg全长多肽。

    Bacillus strains with reduced extracellular protease levels
    39.
    发明授权
    Bacillus strains with reduced extracellular protease levels 失效
    具有降低的细胞外蛋白酶水平的芽孢杆菌菌株

    公开(公告)号:US4828994A

    公开(公告)日:1989-05-09

    申请号:US733379

    申请日:1985-05-13

    IPC分类号: C12N9/56 C12N15/75 C12N15/90

    摘要: Bacillus strains having reduced levels of extracellular protease are produced by replacing the native chromosomal DNA sequence comprising the gene for an extracellular protease, such as subtilisin, with a partially homologous DNA sequence having an inactivating DNA segment inserted therein. The strains are useful as hosts for the expression and secretion of heterologous polypeptides or proteins.

    摘要翻译: 通过用包含插入其中的失活DNA片段的部分同源DNA序列替换包含细胞外蛋白酶基因例如枯草杆菌蛋白酶的天然染色体DNA序列来产生细胞外蛋白酶水平降低的芽孢杆菌菌株。 该菌株可用作异源多肽或蛋白质的表达和分泌的宿主。