FRET PROTEASE ASSAYS FOR CLOSTRIDIAL TOXINS
    3.
    发明申请
    FRET PROTEASE ASSAYS FOR CLOSTRIDIAL TOXINS 审中-公开
    用于封闭性毒素的FRET蛋白质测定

    公开(公告)号:US20080038756A1

    公开(公告)日:2008-02-14

    申请号:US11780925

    申请日:2007-07-20

    IPC分类号: G01N33/569 C07K14/33 C12Q1/04

    摘要: The present invention provides clostridial toxin substrates useful in assaying for the protease activity of any clostridial toxin, including botulinum toxins of all serotypes as well as tetanus toxins. A clostridial toxin substrate of the invention contains a donor fluorophore; an acceptor having an absorbance spectrum overlapping the emission spectrum of the donor fluorophore; and a clostridial toxin recognition sequence that includes a cleavage site, where the cleavage site intervenes between the donor fluorophore and the acceptor and where, under the appropriate conditions, resonance energy transfer is exhibited between the donor fluorophore and the acceptor.

    摘要翻译: 本发明提供了可用于测定任何梭菌毒素(包括所有血清型的肉毒毒素)以及破伤风毒素的蛋白酶活性的梭菌毒素底物。 本发明的梭菌毒素底物含有供体荧光团; 具有与供体荧光团的发射光谱重叠的吸收光谱的受体; 和梭菌毒素识别序列,其包括切割位点,其中切割位点插入供体荧光团和受体之间,并且在适当条件下,在供体荧光团和受体之间显示共振能量转移。

    CELL-BASED FLUORESCENCE RESONANCE ENERGY TRANSFER (FRET) ASSAYS FOR CLOSTRIDIAL TOXINS
    10.
    发明申请
    CELL-BASED FLUORESCENCE RESONANCE ENERGY TRANSFER (FRET) ASSAYS FOR CLOSTRIDIAL TOXINS 审中-公开
    基于细胞的荧光共振能量转移(FRET)用于封闭毒素的测定

    公开(公告)号:US20070122858A1

    公开(公告)日:2007-05-31

    申请号:US11621212

    申请日:2007-01-09

    摘要: The present invention provides a method of determining clostridial toxin activity by (a) contacting with a sample a cell containing a clostridial toxin substrate that includes a donor fluorophore; an acceptor having an absorbance spectrum overlapping the emission spectrum of the donor fluorophore; and a clostridial toxin recognition sequence containing a cleavage site that intervenes between the donor fluorophore and the acceptor, where resonance energy transfer is exhibited between the donor fluorophore and the acceptor under the appropriate conditions; (b) exciting the donor fluorophore; and (c) determining resonance energy transfer of the contacted cell relative to a control cell, where a difference in resonance energy transfer of the contacted cell as compared to the control cell is indicative of clostridial toxin activity.

    摘要翻译: 本发明提供了一种通过(a)使样品与包含供体荧光团的梭菌毒素底物的细胞接触来测定梭菌毒素活性的方法; 具有与供体荧光团的发射光谱重叠的吸收光谱的受体; 以及包含介入供体荧光团和受体之间的切割位点的梭菌毒素识别序列,其中在适当条件下在供体荧光团和受体之间显示共振能量转移; (b)激发供体荧光团; 和(c)确定接触细胞相对于对照细胞的共振能量转移,其中与对照细胞相比,所接触的细胞的共振能量转移的差异指示梭菌毒素活性。