Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving antigen-antibody binding – specific binding protein...
Patent
1991-10-15
1993-02-23
Kepplinger, Esther L.
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving antigen-antibody binding, specific binding protein...
435 76, 435 792, 435 18, 435970, 435975, 422 56, 422 57, 436518, 436514, 436531, 436538, G01N 33535, G01N 33558, G01N 33537
Patent
active
051889382
ABSTRACT:
Diagnostic assays are provided comprising complementary enzyme fragments of .beta.-galactosidase, where one of the fragments is bound to a support and the other fragment is conjugated to an immunologically cross-reactive epitope of the analyte or complementary to an analyte receptor. Binding to the receptor allows for discrimination between complexed enzyme fragment conjugate and uncomplexed enzyme fragment conjugate. The assay medium is then allowed to wick onto a support to which the complementary fragment is substantially uniformly bound in the detection region. The support is then developed, where color formation from the substrate in the detection region is used as a measure of the presence of analyte in the sample.
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patent: 5037735 (1991-08-01), Khanna et al.
Langley, et al., ".beta.-Galactosidase .alpha. Complementation Properties of the Complemented Enzyme and Mechanism of the Complementation Reaction" in Biochemistry (1976) 15(22):4866-4875.
Choate Glenda L.
Khanna Pyare L.
Bidwell Carol E.
Kepplinger Esther L.
Microgenics Corporation
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