title: Screening hydrolysis over two-phases.
abstract: A new assay is described that monitors hydrolysis with the concurrent transfer of a solvatochromic dye across an oil-water barrier. Through the appropriate design, this transfer is accompanied by a 10(6) gain in fluorescence. This response can be used to effectively screen hydrolytic activity at high-throughput. Using this method, microunits of alkaline phosphatase, glucosidases, as well as several common proteases can be visually detected within an hour through concentration over a 200:1 volumetric ratio of aqueous to organic phases. Development of a water-solublizing protecting group extends this methodology to screen a wide range of processes that undergo cleavage of a covalent bond.
authors.affiliation: Department of Molecular Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.
authors.forename: M G
authors.initials: MG
authors.lastname: Cotenescu
authors.forename: J J
authors.initials: JJ
authors.lastname: La Clair
mesh_terms: D000469:Alkaline Phosphatase / Q000378:metabolism*; D010450:Endopeptidases / Q000378:metabolism*; D005959:Glucosidases / Q000378:metabolism*; D006868:Hydrolysis; D013057:Spectrum Analysis
chemical_list: D000469:Alkaline Phosphatase; D005959:Glucosidases; D010450:Endopeptidases