Recombinant peptide production using a cross-linkable solubility tag
    6.
    发明授权
    Recombinant peptide production using a cross-linkable solubility tag 有权
    使用可交联溶解度标签的重组肽生产

    公开(公告)号:US07951559B2

    公开(公告)日:2011-05-31

    申请号:US12172395

    申请日:2008-07-14

    IPC分类号: C07K14/00 C12P21/06

    摘要: The invention relates to the recombinant expression of a peptide of interest in the form of a fusion protein comprising a solubility tag. The fusion protein comprises at least two portions separated by a cleavable peptide sequence wherein one portion is devoid of cysteine residues and the second portion comprises an effective number of cross-linkable cysteine residues. After cell lysis and isolation of the fusion protein, the fusion protein is subsequently cleaved into a mixture of first and second portions. Oxidative cross-linking is used to selectively precipitate one of the two portions to facilitate simple and effective separation of the peptide of interest.

    摘要翻译: 本发明涉及以包含溶解性标签的融合蛋白形式的目标肽的重组表达。 融合蛋白包含由可切割肽序列分开的至少两个部分,其中一部分缺少半胱氨酸残基,第二部分包含有效数目的可交联半胱氨酸残基。 在融合蛋白的细胞溶解和分离后,随后将融合蛋白切割成第一和第二部分的混合物。 氧化交联用于选择性沉淀两部分之一,以促进目的肽的简单和有效分离。

    Recombinant host cells having an increase in buoyant density
    8.
    发明授权
    Recombinant host cells having an increase in buoyant density 有权
    具有增加浮力密度的重组宿主细胞

    公开(公告)号:US09273336B2

    公开(公告)日:2016-03-01

    申请号:US13164990

    申请日:2011-06-21

    摘要: Methods are provided to obtain recombinant microbial cells having at least one genetic modification that increase the buoyant density of a recombinant microbial cell or the buoyant density of inclusion bodies produced within a recombinant microbial cell. Exemplified are genetic modifications that increase the buoyant density of a recombinant microbial cell expressing heterologous peptides and polypeptides. Increasing expression of the genes ysaB, glyQ, glyS or a combination thereof within the recombinant microbial cell produces cells or inclusion bodies having higher buoyant density. A similar effect was achieved by decreasing or disrupting expression of the endogenous gltA gene. Increases in buoyant density render peptide production more efficient with respect to time and costs.

    摘要翻译: 提供了获得具有增加重组微生物细胞的浮力密度或在重组微生物细胞内产生的包涵体的浮力密度的至少一种遗传修饰的重组微生物细胞的方法。 示例是增加表达异源肽和多肽的重组微生物细胞的浮力密度的遗传修饰。 在重组微生物细胞内增加基因ysaB,glyQ,glyS或其组合的表达产生具有较高浮力密度的细胞或包涵体。 通过减少或破坏内源性gltA基因的表达也可以获得类似的效果。 浮力密度的增加使肽生产在时间和成本方面更有效率。

    Recombinant peptide production using a cross-linkable solubility tag
    9.
    发明授权
    Recombinant peptide production using a cross-linkable solubility tag 有权
    使用可交联溶解度标签的重组肽生产

    公开(公告)号:US08617843B2

    公开(公告)日:2013-12-31

    申请号:US13080917

    申请日:2011-04-06

    IPC分类号: C12P21/06 C07K14/00

    摘要: The invention relates to the recombinant expression of a peptide of interest in the form of a fusion protein comprising a solubility tag. The fusion protein comprises at least two portions separated by a cleavable peptide sequence wherein one portion is devoid of cysteine residues and the second portion comprises an effective number of cross-linkable cysteine residues. After cell lysis and isolation of the fusion protein, the fusion protein is subsequently cleaved into a mixture of first and second portions. Oxidative cross-linking is used to selectively precipitate one of the two portions to facilitate simple and effective separation of the peptide of interest.

    摘要翻译: 本发明涉及以包含溶解性标签的融合蛋白形式的目标肽的重组表达。 融合蛋白包含由可切割肽序列分开的至少两个部分,其中一部分缺少半胱氨酸残基,第二部分包含有效数目的可交联半胱氨酸残基。 细胞裂解和分离融合蛋白后,融合蛋白随后被切割成第一和第二部分的混合物。 氧化交联用于选择性沉淀两部分之一,以促进目的肽的简单和有效分离。