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    • 15. 发明申请
    • Biological assay detection method
    • 生物检测方法
    • US20050164311A1
    • 2005-07-28
    • US10484859
    • 2002-08-02
    • James IngleseMarc FerrerAaron Hamilton
    • James IngleseMarc FerrerAaron Hamilton
    • G01N33/531C07K5/10C07K7/06C07K7/08C12Q1/34C12Q1/37C12Q1/42C12Q1/48C12Q1/527G01N33/53G01N33/542G01N33/573
    • G01N33/573G01N33/542
    • The invention is a method for detecting a reaction product which signals the presence of a reaction product inducer such as an enzyme. The method enables the recognition of epitopes that form the basis of a detection strategy without the need for specific antibodies to the epitope. In the method, a directly or indirectly labeled modular domain and a biotinylated form of the cognate peptide ligand are used as the basis for a measurable interaction. The peptide ligand can be masked by modifications through, for example, phosphorylation of the Ser or Thr residue, or extension of the amino acid sequence beyond the C-terminal Val. Because the masked residues are critical to binding of the labeled modular domain, masking of at least one of the residues prevents binding. Upon treatment of the masked residue by the appropriate enzyme, (e.g., treatment of the phosphorylated residue with a phosphatase enzyme, or treatment of the extended residue with a protease enzyme, the peptide is converted to the original unmasked ligand that is capable of binding to the labeled modular domain and forming a measurable complex.
    • 本发明是检测反应产物诱导剂如酶的信号的反应产物的方法。 该方法能够识别构成检测策略基础的表位,而不需要针对表位的特异性抗体。 在该方法中,使用直接或间接标记的模块结构域和生物素化形式的同源肽配体作为可测量相互作用的基础。 可以通过例如Ser或Thr残基的磷酸化或氨基酸序列延伸超过C末端Val的修饰来掩蔽肽配体。 因为掩蔽的残基对于标记的模块结构域的结合至关重要,所以至少一个残基的掩蔽防止结合。 在通过适当的酶处理掩蔽的残留物(例如用磷酸酶处理磷酸化残基或用蛋白酶处理延长的残基时),将肽转化为能够结合到 标记的模块化领域并形成可衡量的复杂。