ELECTROCHEMILUMINESCENCE ENZYME ASSAY

摘要

A rapid single step assay suitable for the detection or quantification of enzymes, in particular, hydrolases, such as aminopeptidases and esterases is described. The enzymatic reaction causes the cleavage of a metal ligand labeled hydrolase substrate. The cleavec ligand alters the electrochemiluminescence of bidentate aromatic heterocyclic nitrogen-containing ligand reagent. The change in electrochemiluminescence correlates to the presence of hydrolase activity present in the sample. The assay can be performed on an IGEN Origen Analyzer. The figure illustrates ECL detection of mixtures of ruthenium (II) tris(bipyridyl) and various concentrations of either picolinic acid (1) (black bars) or 2-pyridinecarboxylic acid ethyl ester (4) (white bars).