Enzyme-based system and sensor for measuring acetone
First Claim
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1. An acetone-specific enzyme system comprising a secondary alcohol dehydrogenase isolated from Xanthobacter autotrophicus Py2 (ATCC®
- PTA-4779) that selectively catalyzes the reduction of acetone to isopropanol in the presence of NAD(P)H, coupled to a detectable signal mediator, wherein the secondary alcohol dehydrogenase comprises a polypeptide having a tetradecameric N-terminal amino acid sequence of SEQ ID NO;
7, said polypeptide being capable of being degraded to form one or more fragments each having the amino acid sequence selected from SEQ ID NO;
8 to SEQ ID NO;
19.
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Abstract
Described are enzyme systems specific for acetone and methods of using these enzyme systems to detect acetone in biological or environmental samples. Biosensors containing these enzyme systems are disclosed, in which detection of acetone may be achieved by linking electrochemical, photometric, or other detection means to one or more acetone-specific enzyme reactions or pathways. Methods of using such acetone-specific biosensors include subject management of weight loss, disease detection, and bioavailability monitoring of therapeutics.
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7 Claims
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1. An acetone-specific enzyme system comprising a secondary alcohol dehydrogenase isolated from Xanthobacter autotrophicus Py2 (ATCC®
- PTA-4779) that selectively catalyzes the reduction of acetone to isopropanol in the presence of NAD(P)H, coupled to a detectable signal mediator, wherein the secondary alcohol dehydrogenase comprises a polypeptide having a tetradecameric N-terminal amino acid sequence of SEQ ID NO;
7, said polypeptide being capable of being degraded to form one or more fragments each having the amino acid sequence selected from SEQ ID NO;
8 to SEQ ID NO;
19. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- PTA-4779) that selectively catalyzes the reduction of acetone to isopropanol in the presence of NAD(P)H, coupled to a detectable signal mediator, wherein the secondary alcohol dehydrogenase comprises a polypeptide having a tetradecameric N-terminal amino acid sequence of SEQ ID NO;
Specification