Kinase assays using polycations
DCFirst Claim
1. A method of monitoring the activity of a kinase enzyme, comprising:
- providing a first mixture comprising a phosphorylatable compound that includes a fluorescent label, a kinase enzyme and a phosphate donor group, wherein the kinase enzyme is capable of phosphorylating the phosphorylatable compound to produce a phosphorylated product;
contacting the phosphorylated product with a polycationic component; and
monitoring a level of phosphorylated product produced by the activity of the kinase enzyme by monitoring binding of the polycationic component to the phosphorylated product.
1 Assignment
Litigations
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
36 Claims
-
1. A method of monitoring the activity of a kinase enzyme, comprising:
-
providing a first mixture comprising a phosphorylatable compound that includes a fluorescent label, a kinase enzyme and a phosphate donor group, wherein the kinase enzyme is capable of phosphorylating the phosphorylatable compound to produce a phosphorylated product;
contacting the phosphorylated product with a polycationic component; and
monitoring a level of phosphorylated product produced by the activity of the kinase enzyme by monitoring binding of the polycationic component to the phosphorylated product. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A method of monitoring a kinase reaction, comprising:
-
contacting a fluorescently labeled kinase substrate with a kinase enzyme and a phosphate donor in a first mixture, the kinase enzyme reacting with the kinase substrate and the phosphate donor to produce a fluorescently labeled phosphorylated product;
introducing a binding component into the first mixture to produce a second mixture, the binding component comprising multivalent metal ions associated therewith, and being sufficiently large to induce a shift in a level of polarized fluorescence emitted from the second mixture when the binding component binds the fluorescently labeled phosphorylated product; and
monitoring a level of polarized fluorescence emitted from the second mixture, the level of polarized fluorescence emitted from the second mixture being indicative of an amount of fluorescently labeled phosphorylated product produced by the kinase reaction. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A method of screening for effectors of a kinase mediated reaction, comprising:
-
providing a first mixture comprising a phosphorylatable compound that includes a fluorescent label, a kinase enzyme and a phosphate donor group;
adding at least a first test compound to the first mixture;
introducing a polycationic component to the first mixture; and
determining whether the test compound is an effector of the kinase enzyme mediated reaction by comparing binding of the polycationic component to a product of the kinase mediated reaction carried out in the presence of the test compound to a product of the kinase mediated reaction carried out in the absence of the test compound. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36)
-
Specification