摘要:
The invention provides assay particles useful, for example, for detecting analytes and binding molecule interactions. One type of assay particle includes a core portion encased by a shell portion, wherein the shell portion comprises an inorganic phosphor that binds selectively to a target molecule. Another type of an assay particle includes a core portion encased by a shell portion, and a coat portion covering the shell portion, wherein the coat portion comprises an inorganic phosphor that binds selectively to a target molecule. A further type of assay particle includes a core portion encased by a shell portion, and a coat portion covering the shell portion, wherein the coat portion comprises an inorganic phosphor and a target selective binding moiety, and wherein the assay particle is buoyant in aqueous media. An additional type of assay particle includes a core portion encased by a shell portion, and a coat portion covering the shell portion, wherein the shell portion comprises an inorganic phosphor and the coat portion comprises a target selective binding moiety, and wherein the assay particle is buoyant in aqueous media. Also provided are kits and related methods.
摘要:
Kits including novel fluorescent derivitization reagents for labeling an aldehyde- and/or ketone-containing target substance in a sample are described. In one embodiment kits are provided the novel fluorescent derivitization reagents of which have the following formula: wherein Q is carbonyl, thiocarbonyl, or sulfonyl, and R5 is -L-Z; L is arylene, or a C1-6 perfluoroalkylene; Z is a carbonyl hydrazide, hydrazide, sulfonyl hydrazide, or a thiocarbonyl hydrazide; R11-R14 are independently H, C1-16 alkyl, C1-6 alkylamino, amino, or halogen; and R21-R24 are independently H, C 1-6 alkyl, C 1-6 alkoxy, C1-6 perfluoroalkyl, C1-6 alkylamino, di(C2-12-alkyl)amino, amino, carboxy, cyano, halogen, hydroxy, nitro, phenyl, sulfo, or -L-Z. The kits and reagents described are particularly useful for labeling glycoproteins or glycopeptides, nucleic acids, and lipopolysaccharides in electrophoresis gels.
摘要:
The inventions relates to methods and kits for capture and/or analysis of kinases and/or phosphatases in one or more samples. In some embodiments, a kinase inhibitor, e.g. staurosporine or its derivative, is used to capture kinases from a sample. In some embodiments, a phosphatase inhibitor, e.g. microcystin or its derivative, is used to capture phosphatases from a sample. Methods for quantitative analysis of captured kinases and/or proteases are also provided. In some embodiments, quantitative analysis is accomplished using mass spectrometry. In addition, the invention provides kits related to same.
摘要:
The invention provides methods for detecting and isolating phosphomolecules using phosphoaffinity materials that comprise a hydrated metal oxide. In an embodiment, a method for detecting a phosphomolecule in a sample involves (a) contacting a sample with a phosphoaffinity material comprising a hydrated metal oxide, under conditions wherein a phosphomolecule is capable of binding to the phosphoaffinity material to form a phosphomolecule-phosphoaffinity material complex, and (b) detecting formation of a phosphomolecule-phosphoaffinity material complex, thereby detecting a phosphomolecule in the sample. In another embodiment, a method for isolating a phosphomolecule from a sample involves (a) contacting a sample with a phosphoaffinity material comprising a hydrated metal oxide, under conditions wherein a phosphomolecule is capable of binding to the phosphoaffinity material to form a phosphomolecule-phosphoaffinity material complex, wherein the hydrated metal oxide comprises yttrium, and (b) separating the phosphomolecule-phosphoaffinity material complex from the sample, thereby isolating the phosphomolecule from the sample.
摘要:
The invention describes methods for labeling or detecting of immobilized poly(amino acids), including peptides, polypeptides and proteins, on membranes and other solid supports, using fluorescent dipyrrometheneboron difluoride dyes. Such immobilized poly(amino acids) are labeled or detected on blots or on arrays of poly(amino acids), or are attached to immobilized aptamers.
摘要:
The present invention relates to phosphate-binding compounds that find use in binding, detecting and isolating phosphorylated target molecules including the subsequent identification of target molecules that interact with phosphorylated target molecules or molecules capable of being phosphorylated. A binding solution is provide that comprises a phosphate-binding compound, an acid and a metal ion wherein the metal ion simultaneously interacts with an exposed phosphate group on a target molecule and the metal chelating moiety of the phosphate-binding compound forming a bridge between the phosphate-binding compound and a phosphorylated target molecule resulting in a ternary complex. The binding solution of the present invention finds use in binding and detecting immobilized and solubilized phosphorylated target molecules, isolation of phosphorylated target molecules from a complex mixture and aiding in proteomic analysis wherein kinase and phosphatase substrates and enzymes can be identified.
摘要:
Disclosed are methods and reagents for detecting the presence of and/or activity of one or more phospho-transfer activities such as kinase, phosphatase, nucleotide cyclase, or phosphodiesterase activities.
摘要:
The invention relates to the staining of amine-containing polymers, including including peptides, polypeptides, and proteins, in gels and on solid supports, using complexes of europium (3+).
摘要:
The invention provides methods for detecting and isolating phosphomolecules using phosphoaffinity materials that comprise a hydrated metal oxide. In an embodiment, a method for detecting a phosphomolecule in a sample involves (a) contacting a sample with a phosphoaffinity material comprising a hydrated metal oxide, under conditions wherein a phosphomolecule is capable of binding to the phosphoaffinity material to form a phosphomolecule-phosphoaffinity material complex, and (b) detecting formation of a phosphomolecule-phosphoaffinity material complex, thereby detecting a phosphomolecule in the sample. In another embodiment, a method for isolating a phosphomolecule from a sample involves (a) contacting a sample with a phosphoaffinity material comprising a hydrated metal oxide, under conditions wherein a phosphomolecule is capable of binding to the phosphoaffinity material to form a phosphomolecule-phosphoaffinity material complex, wherein the hydrated metal oxide comprises yttrium, and (b) separating the phosphomolecule-phosphoaffinity material complex from the sample, thereby isolating the phosphomolecule from the sample.
摘要:
Novel fluorescent derivitization reagents are described that are suitable for coupling to biomolecules that contain aldehyde or ketone functional groups. In one embodiment is provided reagents that have the following formula: wherein Q is carbonyl, thiocarbonyl, or sulfonyl, and R5 is -L-Z; L is arylene, or a C1-6 perfluoroalkylene, or a single covalent bond; Z is a carbonyl hydrazide, hydrazide, sulfonyl hydrazide, or a thiocarbonyl hydrazide; R11-R14 are independently H, C1-6alkyl, C1-6 alkoxy, C1-6 perfluoroalkyl, C1-6 alkylamino, di(C2-12-alkyl)amino, amino, carboxy, cyano, halogen, hydroxy, nitro, phenyl, or sulfo; and R21-R24 are independently H, C1-6 alkyl, C1-6 alkoxy, C1-6 perfluoroalkyl, C1-6 alkylamino, di(C2-12-alkyl)amino, amino, carboxy, cyano, halogen, hydroxy, nitro, phenyl, sulfo, or -L-Z. The method of treating a sample with the derivativization reagents is described. The reagents are particularly useful for labeling glycoproteins or glycopeptides, nucleic acids, and lipopolysaccharides in electrophoresis gels.