Assay methods and systems
First Claim
1. A method of measuring the activity of a kinase enzyme, comprising:
- providing a reaction mixture comprising a fluorescently labeled phosphorylatable compound, a kinase enzyme and a phosphate donor group, wherein the kinase enzyme is capable of transferring a phosphate from the phosphate donor group to the phosphorylatable compound to produce a phosphorylated product;
contacting the phosphorylated product with a molecule having multivalent metal cations associated therewith; and
determining a level of phosphorylated product by detecting a level of fluorescent intensity emitted from the reaction mixture.
1 Assignment
0 Petitions
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.
-
Citations
28 Claims
-
1. A method of measuring the activity of a kinase enzyme, comprising:
-
providing a reaction mixture comprising a fluorescently labeled phosphorylatable compound, a kinase enzyme and a phosphate donor group, wherein the kinase enzyme is capable of transferring a phosphate from the phosphate donor group to the phosphorylatable compound to produce a phosphorylated product;
contacting the phosphorylated product with a molecule having multivalent metal cations associated therewith; and
determining a level of phosphorylated product by detecting a level of fluorescent intensity emitted from the reaction mixture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of measuring the activity of a phosphatase enzyme, comprising:
-
providing a reaction mixture comprising a fluorescently labeled phosphorylated compound, a phosphatase enzyme, and a molecule having multivalent metal cations associated therewith; and
determining a level of dephosphorylated product produced by the activity of the phosphatase enzyme by detecting a level of fluorescent intensity emitted from the reaction mixture. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. A method of monitoring the activity of an enzyme, comprising:
-
providing a first mixture comprising a fluorescently labeled substrate and an enzyme, wherein the enzyme is capable of modifying the chemical structure of the substrate to produce a fluorescently labeled product;
contacting the product with a molecule having multivalent metal cations associated therewith; and
determining a level of product produced by the activity of the enzyme by measuring binding of the molecule to the product. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
Specification