摘要:
Embodiments of the present invention provide a staining solution and of method of using the staining solution for selectively detecting proteins that contain two or more α-helical transmembrane domains. The staining solution comprises a lipophilic dyes and at least about a 30% hydrophobic solvent. The dyes of the present are represented by the general formula A-B-E wherein A is a nitrogen heterocycle, B is a bridge moiety and E is an electron pair accepting moiety that comprises either a carbonyl or nitrogen atom. In one embodiment these lipophilic dyes are merocyanine dye, a cyanine dye, a styryl dye or a carbazolylvinyl dye.
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 present invention provides dyes, reactive dyes and labeled reagents that may be used in the detection or quantification of desirable target molecules, such as proteins, nucleic acids and cellular organelles. Dyes are provided that may be used free in solution where the binding of the dye to the target molecule provides signal generation. Dyes are also provided that comprise reactive groups that may be used to attach the dyes to probes that will bind to desirable target molecules. The novel dyes of the present invention have been modified to provide beneficial properties.
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 invention provides methods for isolating a target molecule from a sample. In an embodiment, the method involves contacting a sample with a capture agent, the agent comprising a siderophore and a transition metal cation, under conditions wherein the agent is capable of binding a target molecule to form a target molecule-capture agent complex, wherein the target molecule is selected from the group consisting of a phosphorylated molecule, a nitrotyrosine-containing molecule and a sulfated molecule, and separating the target molecule-capture agent complex from the sample, thereby isolating the target molecule from the sample. Also provided are methods for determining the presence of a target molecule in a sample, that involve contacting a sample with a capture agent, the agent comprising a siderophore and a transition metal cation.
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, C1-6 alkyl, C1-6 alkoxy, C1-6 perfluoroalkyl, C1-6 alklyamino, di(C2-12alkyl)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 alklyamino, 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.
摘要:
The invention relates to the staining of poly(amino acids), including peptides, polypeptides and proteins in gels and on solid supports, using neutral or anionic complexes of transition metals.
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.