BIOSENSORS FOR DETECTING MACROMOLECULES AND OTHER ANALYTES

摘要

Described are compositions and methods that are useful in the identification and quantification of any polypeptide or macromolecular complex using a set of co-aptamer constructs. Aptamer constructs are constructed that bind to uniqu e epitopes of a polypeptide of macromolecular construct. Those aptamer constructs contain an epitope binding site, a co-aptamer binding site, and a detectable label. In the presence of the cognate polypeptide, analyte- polypeptide complex, or other macromolecular complex, the co-aptamers associate with one another to produce a detectable signal. The co-aptamer constructs may be joined by a linker to produce a bivalent aptamer construct .