Assay methods and systems
First Claim
1. A kit, comprising:
- a first reagent which comprises a fluorescent label;
a second reagent which reacts with the first reagent to produce a fluorescent product having a substantially different charge from the first reagent;
a polycationic component that binds to the fluorescent product to change a level of fluorescence polarization of the fluorescent product.
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Accused Products
Abstract
Methods, systems, kits for carrying out a wide variety of different assays that comprise providing a first reagent mixture which comprises a first reagent having a fluorescent label. A second reagent is introduced into the first reagent mixture to produce a second reagent mixture, where the second reagent reacts with the first reagent to produce a fluorescently labeled product having a substantially different charge than the first reagent. A polyion is introduced into at least one of the first and second reagent mixtures, and the fluorescent polarization in the second reagent mixture relative to the first reagent mixture is determined, this fluorescent polarization being indicative of the rate or extent of the reaction.
51 Citations
31 Claims
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1. A kit, comprising:
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a first reagent which comprises a fluorescent label;
a second reagent which reacts with the first reagent to produce a fluorescent product having a substantially different charge from the first reagent;
a polycationic component that binds to the fluorescent product to change a level of fluorescence polarization of the fluorescent product. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A kit, comprising:
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a first reagent comprising a fluorescent label;
a kinase enzyme that transfers a phosphate from ATP to the first reagent to produce a phosphorylated florescent product;
a polymer having multivalent metal cations associated therewith, wherein the metal cations bind the polymer to the fluorescent product; and
instructions for;
mixing the fluorescent product and the polymer in a reaction mixture; and
measuring a level of fluorescence polarization of the reaction mixture, wherein the polymer is sufficiently large to induce a shift in an amount of polarized fluorescence emitted from the reaction mixture when the multivalent metal cations bind the polymer to the fluorescent product. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A kit, comprising:
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a phosphorylatable compound that comprises a fluorescent label;
a kinase enzyme that transfers a phosphate from ATP to the phosphorylatable compound to produce a phosphorylated fluorescent product;
a polymer having multivalent metal cations associated therewith, wherein the metal cations bind the polymer to the phosphorylated fluorescent product. - View Dependent Claims (27, 28, 29, 30, 31)
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Specification