The present disclosure relates to new fluorescent molecules that contain N-alkylated or N-acylated tryptophan and do not substantially quench fluorescent labels attached to the molecules, and the use of such molecules in preparing and studying various compounds, such as substrates and inhibitors for assays of enzymes (e.g., caspases, such as caspase-1 which is an important enzyme in inflammation). An enzyme substrate or enzyme inhibitor that contains a modified tryptophan and fluorescent label as disclosed herein can be studied without loss of signal by Förster quenching. By reducing or eliminating this quenching, more useful labeled molecules with improved properties for assay development can be prepared.
本公开涉及含有N-烷基化或N-酰化色
氨酸的新荧光分子,这些分子不会显着猝灭连接到分子上的荧光标记,并且利用这些分子在制备和研究各种化合物(例如用于酶(如半胱
氨酸
蛋白酶,如炎症中的重要酶半胱
氨酸
蛋白酶-1)的测定的底物和
抑制剂)中的应用。根据本公开的含有经修改的色
氨酸和荧光标记的酶底物或酶
抑制剂可以通过Förster猝灭进行研究,而不会丢失信号。通过减少或消除这种猝灭作用,可以制备更有用的带标记分子,具有改进的性质用于测定方法的开发。