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    • 6. 发明申请
    • Fluorogenic protease substrates based on dye-dimerization
    • 基于染料二聚化的荧光蛋白酶底物
    • US20050089946A1
    • 2005-04-28
    • US10930522
    • 2004-08-31
    • Ai-Ping WeiMichael Williams
    • Ai-Ping WeiMichael Williams
    • C07K7/06C12Q1/04C12Q1/37C12Q1/68
    • C07K7/06C12Q1/37C12Q2337/40Y02A50/451
    • A method of biological assay comprises the steps of providing an enzyme substrate comprising two fluorescence dye groups bound to a flexible peptide, the dye groups being of proximity sufficiently close so as to allow free energy attractions to draw the dyes together to essentially self-quench fluorescence of the dye groups, wherein self quenching of fluorescence of the dye groups is effected by dye dimerization or stacking, and enzymatically cleaving the peptide to release the fluorescence dye groups from dye dimerization or stacking, thereby producing an increase in fluorescence intensity. A protease substrate for use in the method of the invention is also disclosed. This invention finds use in detection and identification of microorganisms, sterilization assurance, pharmaceutical discovery, enzyme assays, immunoassays, and other biological assays.
    • 一种生物测定方法包括以下步骤:提供包含与柔性肽结合的两个荧光染料基团的酶底物,所述染料组的接近度足够接近,以便使自由能吸引力将染料一起吸收到基本上自熄灭荧光 的染料基团,其中染料基团的荧光自发淬灭通过染料二聚化或堆叠进行,并且酶切割肽以使荧光染料基团从染料二聚化或堆叠释放,从而产生荧光强度的增加。 还公开了用于本发明方法的蛋白酶底物。 本发明用于微生物的检测和鉴定,灭菌保证,药物发现,酶测定,免疫测定和其他生物测定。
    • 7. 发明授权
    • Assay procedure using fluorogenic tracers
    • 使用荧光示踪剂的测定程序
    • US06576419B1
    • 2003-06-10
    • US08891114
    • 1997-07-10
    • Ai-Ping WeiJames N. Herron
    • Ai-Ping WeiJames N. Herron
    • C12Q108
    • G01N33/582C12Q1/6818
    • Fluorescent energy transfer dyes capable of moving between a more stacked configuration to exhibit fluorescent quenching and a more spaced configuration to exhibit fluorescence can be conjugated to a peptide epitope or nucleic acid for use in the detection of an unknown antibody in bulk solution. The resulting labeled peptide reagent can be used in an immunoassay procedure by placing it in bulk solution along with the unknown antibody to be detected. When the antibody binds to the peptide epitope, the pair of dyes carried by the peptide epitope will have their configuration altered from a stacked to an unstacked configuration and will exhibit a fluorescent increase in response thereto.
    • 能够在更叠层的配置之间移动以展现荧光猝灭和更间隔的配置以显示荧光的荧光能量转移染料可以缀合到肽表位或核酸上,以用于检测本体溶液中的未知抗体。 所得标记的肽试剂可以在免疫测定程序中使用,将其与待检测的未知抗体一起放入本体溶液中。 当抗体与肽表位结合时,由肽表位携带的一对染料将具有从堆叠到未堆叠构型的改变,并且对其反应将呈现荧光增加。