Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving antigen-antibody binding – specific binding protein...
Patent
1994-07-25
1997-09-23
Ceperley, Mary E.
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving antigen-antibody binding, specific binding protein...
435 6, 435 79, 435 795, 435 14, 435207, G01N 33573, G01N 33535
Patent
active
056703279
ABSTRACT:
A non-radioactive method of detecting the enzymes beta galactosidase or beta glucosidase directly or for the detection of a ligand and antiligand complex is provided wherein beta galactosidase or the complex labelled with beta galactosidase or a tracer having beta galactosidase conjugated thereto is reacted with 5-bromo-4-chloro-3-indolyl-B-D-galactoside and a tetrazolium salt to produce a colored formazan or a color change indicative of the presence of beta galactosidase, or wherein beta glucosidase or the complex labelled with the beta glucosidase or a tracer having beta glucosidase conjugated thereto is reacted with 5-bromo-4-chloro-3-indolyl-B-D-glucoside and a tetrazolium salt to produce a colored formazan or a color change indicative of the presence of beta glucosidase. Optionally, the galactosidase-galactoside determination or the glucosidase-glucoside determination may further include catalyst phenazine methosulfate (PMS) as a reactant. The preferred tetrazolium salt is dimethylthiazol diphenyl tetrazolium (MTT). A solution or composition of 5-bromo-4-chloro-3-indolyl-B-D-galactoside or 5-bromo-4-chloro-3-indolyl-B-D-glucoside, and a tetrazolium salt, as well as a test kit including the same, is also provided for carrying out the chromogenic method of detection.
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Ceperley Mary E.
Hanrath James P.
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