Use of substrate subtraction libraries to distinguish enzyme specificities

摘要

The invention provides substrate substraction libraries and methods of using substrate substraction libraries to identify highly selective substrates for enzymes which use peptides as substrates. In one embodiment, substrates for proteases such as t-PA and u-PA have been identified whose relative reactivities towards the two enzymes vary by a factor of more than 9000. The substrates identified by the present invention are useful for the construction of highly selective enzyme inhibitors.