Analytical reagent particle with covalently-bound enzyme

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving virus or bacteriophage

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Details

435 794, 435 795, 436518, 436527, G01N 3353

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active

057389861

ABSTRACT:
The invention relates to a reagent consisting of at least one enzyme and at least one other substance, which are covalently or noncovalently bound to a particle, which is smaller than or is equal to 1000 Angstrom in diameter. The invention also relates to method and use of the reagent for determination or studies of a cell or a virus or another component in a sample. According to the invention, these determinations are made with for example some ELISA-technique (competitive, sandwich, etc.), employing the reagent preferrably in the form of a suspension in buffered water, instead of and in the same way as described for soluble enzyme conjugates. The substance can be an antibody, a lectin, avidin or an antigen, the enzyme can be for example peroxidase, alkaline phosphatase, and the particle can be an inorganic or an organic polymeric compound or a combination thereof, as, for example, tresyl-activated glycerylpropyl-silica.

REFERENCES:
patent: 4193983 (1980-03-01), Ullman et al.
patent: 4552839 (1985-11-01), Gould et al.
Nilsson et al., Immobilization of Ligands with Organic Sulfonyl Chlorides, Methods in Enzymology 104:56-69, 1984.

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