The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 29, 1995

Filed:

Jan. 13, 1993
Applicant:
Inventors:

Brian R Rabin, Potters Bar, GB;

Stuart Harbron, Berkhamstead, GB;

Hendrikus J Eggelte, Brunswick Square, GB;

Michael R Hollaway, deceased, late of Brunswick Square, GB;

Ann Holloway, legal representative, Surrey, GB;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12Q / ; C12Q / ; C07H / ;
U.S. Cl.
CPC ...
435 18 ; 435-77 ; 435 28 ; 435810 ; 435975 ; 536 2625 ;
Abstract

Hydrolase enzymes are sensitively determined using novel substituted FAD substrates. The substituted FAD substrates are hydrolysed to FAD by the enzyme to be detected. The FAD is then combined with an apoenzyme to form a holoenzyme which is used to initiate a reaction that leads to a detectable product. When the hydrolase to be detected is phosphatase, the novel substrate is a phosphorylated derivative of FAD. A suitable apoenzyme is apo-glucose oxidase which provides exceptional sensitivity. Apo-D-amino acid oxidase, which is suitable for use in a 'single pot' assay system, can also be used.


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