High throughput screening assays utilizing affinity binding of green fluorescent protein

Abstract

Novel methods of detecting fluorescent proteins are described. The methods result in vastly improved signal-to-noise ratios in assays measuring fluorescence of a fluorescent protein specifically by employing a unique trapping step to microconcentrate the fluorescent protein and by using improved optical techniques. The trapping step may be a chemical or physical process or a combination thereof leading to substantial microconcentration of the fluorescent protein with concomitant removal of contaminants or interfering compounds. The methods are readily adaptable to high throughput screening and can be engineered for use with a wide variety of assays currently using microplate readers. Green fluorescent protein and fluorescent coral proteins are among preferred fluorescent proteins for the methods.

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