We have devised a highly sensitive fluorometric well plate assay for tissue transglutaminase that is suitable for multiple kinetic analyses/high-throughput screening of chemical inventories for inhibitors of this enzyme. The procedure measures the rate of fluorescence enhancement ( exc 260 nm, em 53
A sensitive fluorometric assay for the determination of DNA
✍ Scribed by Richard Vytášek
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 421 KB
- Volume
- 120
- Category
- Article
- ISSN
- 0003-2697
No coin nor oath required. For personal study only.
✦ Synopsis
A sensitive tluorometric assay for DNA determination using m-diaminobenzoic acid dihydrochloride for the reaction with deoxyribose liberated by perchloric acid is described. Fluorescence is proportional to the amount of DNA over the range 0.05-5 pg of DNA when the reaction is conducted in a volume of 400 ~1 and over the range 0.01-0.5 pg when the reaction is conducted in a volume of 40 ~1. The assay is suitable for estimating DNA both in perchloric acid extracts and in complex mixtures with protein and RNA. The determination of DNA in cells grown as a monolayer by the described method is simple and rapid.
📜 SIMILAR VOLUMES
The quenching of the tryptophan fluorescence of avidin by biotin forms the basis for a rapid, sensitive assay for biotin and avidin in solutions free of fluorescent contaminants. Avidin solutions are assayed by titration with a standard biotin solution until no further decrease in fluorescence at 35
A simple, rapid, and sensitive fluorometric assay for measuring the activity of tyrosine hydroxylase is described. The enzyme activity is detected by converting tyrosine to 3,4-dihydroxyphenylalanine (dopa), which is then subjected to conversion to the highly fluorescent product by the trihydroxyind