Fluorescent energy transfer with phycobiliproteins
First Claim
1. In a method for the detection of a ligand by detecting an immunological reaction between said ligand and a ligand binding receptor specific therefor, the improvement comprising detecting said immunological reaction by detecting a label associated with one of said ligand or ligand binding receptor components, said label comprising a plurality of Azure A molecules covalently coupled to Allophycocyanin under conditions allowing energy transfer therebetween;
- said detecting further comprising illuminating said label at a first frequency capable of exciting the Azure A molecules and detecting fluorescent emission from said Allophycocyanin at a second frequency.
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Abstract
Dyes are provided comprising phycobiliproteins having covalently coupled thereto a plurality of small molecular weight organic dyes under conditions permitting energy transfer mechanisms to operate therebetween. The resultant label may then be used in virtually any immunoassay format.
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Citations
2 Claims
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1. In a method for the detection of a ligand by detecting an immunological reaction between said ligand and a ligand binding receptor specific therefor, the improvement comprising detecting said immunological reaction by detecting a label associated with one of said ligand or ligand binding receptor components, said label comprising a plurality of Azure A molecules covalently coupled to Allophycocyanin under conditions allowing energy transfer therebetween;
- said detecting further comprising illuminating said label at a first frequency capable of exciting the Azure A molecules and detecting fluorescent emission from said Allophycocyanin at a second frequency.
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2. A fluorescent label comprising a plurality of Azure A molecules covalently coupled to Allophycocyanin whereby excitation of said Azure A molecules results in energy transfer to said Allophycocyanin resulting in detectable fluorescent emission by said Allophycocyanin.
Specification