Methods for preventing inhibition of nucleic acid synthesis by pyrophosphate
First Claim
1. A method of inhibiting or preventing pyrophosphorolysis during synthesis of a nucleic acid molecule, said method comprising (a) combining one or more nucleotides and a nucleic acid template;
- and (b) incubating the one or more nucleotides and nucleic acid template together with a polymerase and an enzyme selected from the group consisting of a pentosyltransferase, a phosphotransferase with alcohol group as acceptor, a nucleotidyltransferase, and a carboxy-lyase, under conditions sufficient to form a second nucleic acid molecule complementary to all or a portion of the nucleic acid template.
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Abstract
Methods for preventing inhibition of nucleic acid synthesis by pyrophosphate are disclosed. More specifically, the present invention concerns inhibiting or preventing pyrophosphorolysis in sequencing and amplification of nucleic acid molecules. According to the present invention, an enzyme which is a pentosyltransferase, a phosphotransferase with an alcohol group as acceptor, a nucleotidyltransferase, or a carboxy-lyase is added to the reaction which serves to remove pyrophosphate from the reaction mixture.
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Citations
51 Claims
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1. A method of inhibiting or preventing pyrophosphorolysis during synthesis of a nucleic acid molecule, said method comprising
(a) combining one or more nucleotides and a nucleic acid template; - and
(b) incubating the one or more nucleotides and nucleic acid template together with a polymerase and an enzyme selected from the group consisting of a pentosyltransferase, a phosphotransferase with alcohol group as acceptor, a nucleotidyltransferase, and a carboxy-lyase, under conditions sufficient to form a second nucleic acid molecule complementary to all or a portion of the nucleic acid template. - View Dependent Claims (13)
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2. A method of inhibiting or preventing pyrophosphorolysis during synthesis of a nucleic acid molecule, said method comprising
(a) combining a primer with a nucleic acid template under conditions sufficient to form a hybridized product; - and
(b) incubating said hybridized product in the presence of (i) one or more nucleotides, (ii) a polymerase, and (iii) an enzyme selected from the group consisting of a pentosyltransferase, a phosphotransferase with an alcohol group as acceptor, a nucleotidyltransferase, and a carboxy-lyase under conditions sufficient to synthesize a second nucleic acid molecule complementary to all or a portion of said nucleic acid template. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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14. A method to prevent inhibition of nucleic acid synthesis during amplification of a double stranded nucleic acid molecule, comprising
(a) providing a first and second primer, wherein said first primer is complementary to a sequence at or near the 3′ - termini of the first strand of said nucleic acid molecule and said second primer is complementary to a sequence at or near the 3′
termini of the second strand of said nucleic acid molecule;
(b) hybridizing said first primer to said first strand and said second primer to said second strand in the presence of (i) a polymerase, and (ii) an enzyme selected from the group consisting of a pentosyltransferase, a phosphotransferase with an alcohol group as an acceptor, a nucleotidyltransferase and a carboxy-lyase under conditions such that a third nucleic acid molecule complementary to said first strand and a fourth nucleic acid molecule complementary to said second strand are synthesized;
(c) denaturing said first and third strand and said second and fourth strand; and
(d) repeating steps (a) to (c) one or more times. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
- termini of the first strand of said nucleic acid molecule and said second primer is complementary to a sequence at or near the 3′
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25. A method of sequencing a DNA molecule comprising:
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(a) combining a primer with a first DNA molecule under conditions sufficient to form a hybridized product;
(b) contacting said hybridized product with (i) nucleotides;
(ii) a DNA polymerase;
(iii) an enzyme selected from the group consisting of a pentosyltransferase, a phosphotransferase with an alcohol group as acceptor, a nucleotidyltransferase and a carboxy-lyase; and
a terminator nucleotide to give a reaction mixture;
(c) incubating the reaction mixture under conditions sufficient to synthesize a random population of DNA molecules complementary to said first DNA molecule, wherein said synthesized DNA molecules are shorter in length than said first DNA molecule and wherein said synthesized DNA molecules comprise a terminator nucleotide at their 3′
termini; and
(d) separating said synthesized DNA molecules by size so that at least a part of the nucleotide sequence of said first DNA molecule can be determined. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A solution for use in nucleic acid synthesis, amplification or sequencing, comprising
(a) an enzyme selected from the group consisting of a pentosyltransferase, a phosphotransferase with alcohol group as acceptor, a nucleotidyltransferase, and a carboxy-lyase; -
(b) a substrate which is capable of either accepting either a phosphate radical to give a phosphorylated product from pyrophosphate or effecting transfer of pyrophosphate when in the presence of said enzyme; and
(c) a polymerase. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A kit comprising a container means having in close confinement therein two or more container means, wherein a first container means comprises an enzyme selected from the group consisting of a pentosyltransferase, a phosphotransferase with an alcohol group as acceptor, a nucleotidyltransferase, and a carboxy-lyase;
- and a third container means contains a substrate which is capable of either accepting a phosphate radical to give a phosphorylated product from pyrophosphate or effecting transfer of pyrophosphate when in the presence of said enzyme;
wherein a nucleic acid polymerase is optionally present in said first container means or is optionally comprised in a second container means. - View Dependent Claims (49, 50, 51)
- and a third container means contains a substrate which is capable of either accepting a phosphate radical to give a phosphorylated product from pyrophosphate or effecting transfer of pyrophosphate when in the presence of said enzyme;
Specification