Methods and compositions for detecting nucleic acids
First Claim
Patent Images
1. A reporter molecule for detecting a nucleic acid, the molecule comprising:
- an enzyme having a kcat of at least about 200 sec−
1;
a reversible inhibitor of said enzyme inhibitorily engaging said enzyme; and
a nucleobase polymer extending between said enzyme and said reversible inhibitor;
wherein said polymer is operable to interfere with the engagement between said inhibitor and said enzyme when said nucleic acid contacts said polymer.
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Abstract
A reporter molecule for detecting a nucleic acid is disclosed. The molecule comprises an enzyme having a kcat of at least about 200 sec−1, a reversible inhibitor of the enzyme inhibitorily engaging the enzyme, and a nucleobase polymer extending between the enzyme and the inhibitor. The polymer interferes with the engagement between the inhibitor and the enzyme when the nucleic acid contacts the polymer. Methods of making and methods of using the reporter molecule are also disclosed.
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Citations
51 Claims
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1. A reporter molecule for detecting a nucleic acid, the molecule comprising:
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an enzyme having a kcat of at least about 200 sec−
1;
a reversible inhibitor of said enzyme inhibitorily engaging said enzyme; and
a nucleobase polymer extending between said enzyme and said reversible inhibitor;
wherein said polymer is operable to interfere with the engagement between said inhibitor and said enzyme when said nucleic acid contacts said polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of detecting a nucleic acid in a sample, the method comprising:
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contacting said sample with a reporter molecule for detecting said nucleic acid, wherein said reporter molecule comprises an enzyme having a kcat of at least about 200 sec−
1, a reversible inhibitor of said enzyme inhibitorily engaging said enzyme; and
a nucleobase polymer extending between said enzyme and said reversible inhibitor, said polymer operable to interfere with the engagement between said inhibitor and said enzyme when said nucleic acid contacts said polymer; and
determining activity of said enzyme. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of making a reporter molecule for detecting a nucleic acid comprising:
covalently attaching both an enzyme having a kcat of at least about 200 sec−
1 and a reversible inhibitor of said enzyme to a nucleobase polymer, wherein upon forming said reporter molecule, said reversible inhibitor is engaged to said enzyme inhibitorily and wherein said nucleic acid is operable to interfere with the engagement of said inhibitor and said enzyme upon contacting said polymer.- View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for detecting a small RNA, said method comprising:
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providing an enzyme having a kcat of at least about 200 sec−
1;
tethering a reversible inhibitor enzyme to said small RNA;
hybridizing said small RNA with a complementary nucleotide;
determining enzyme activity produced by said hybridizing said small RNA with said complementary nucleotide; and
relating determined enzyme activity to a quantity of said small RNA. - View Dependent Claims (33, 34, 35, 36)
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37. A system for detecting a nucleic acid, said system comprising:
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a reporter molecule for detecting said nucleic acid, wherein said reporter molecule comprises an enzyme having a kcat of at least about 200 sec−
1, a reversible inhibitor of said enzyme inhibitorily engaging said enzyme; and
a nucleobase polymer extending between said enzyme and said reversible inhibitor, said polymer operable to interfere with the engagement between said inhibitor and said enzyme when said nucleic acid contacts said polymer; and
a substrate for said enzyme. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44)
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45. A reporter molecule for detecting a nucleic acid, the molecule comprising:
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an enzyme moiety having a kcat of at least about 200 sec−
1;
a reversible inhibitor moiety, operable as a reversible inhibitor of said enzyme; and
a nucleobase polymer moiety having at least about 20 bases, covalently bonded to said enzyme moiety and said reversible inhibitor moiety;
wherein the said polymer is operable to allow said inhibitor moiety to reversibly inhibit said enzyme moiety, and to interferes with such inhibition when said nucleic acid contacts said polymer. - View Dependent Claims (46, 47, 48, 49, 50, 51)
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Specification