Nucleic acid production and sequence analysis
First Claim
1. A method for producing a nucleic acid molecule from a template nucleic acid sequence comprising a linking unit attached to a primer, which method comprises a step of contacting the template nucleic acid sequence with a nucleic acid polymerase under conditions which allow the nucleic acid polymerase to produce the nucleic acid molecule from the primer based on the template nucleic acid sequence, wherein the linking unit is attached with a covalent linkage to a target site within the template nucleic acid sequence and not to a terminal nucleotide of the template nucleic acid sequence such that priming of nucleic acid synthesis occurs at or within less than 5 bases of the target site.
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Abstract
A method for producing a nucleic acid molecule from a template nucleic acid sequence and a linking unit attached to a primer, which method comprises a step of contacting the template nucleic acid sequence with a nucleic acid polymerase under conditions which allow the nucleic acid polymerase to produce the nucleic acid molecule from the primer based on the template nucleic acid sequence, wherein the linking unit is attached to a target site in the template nucleic acid sequence with a covalent linkage.
21 Citations
32 Claims
- 1. A method for producing a nucleic acid molecule from a template nucleic acid sequence comprising a linking unit attached to a primer, which method comprises a step of contacting the template nucleic acid sequence with a nucleic acid polymerase under conditions which allow the nucleic acid polymerase to produce the nucleic acid molecule from the primer based on the template nucleic acid sequence, wherein the linking unit is attached with a covalent linkage to a target site within the template nucleic acid sequence and not to a terminal nucleotide of the template nucleic acid sequence such that priming of nucleic acid synthesis occurs at or within less than 5 bases of the target site.
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14. A method for determining the presence or availability of a target site comprising a nucleotide within a template nucleic acid sequence, which method comprises:
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(a) contacting the template nucleic acid sequence with a compound comprising a first reactive group and an enzyme, wherein the enzyme is capable of transferring the first reactive group, or a part of the compound comprising the first reactive group, onto the nucleotide of the target site; (b) contacting the nucleic acid sequence with a second reactive group attached to a linking unit, optionally wherein the linking unit is attached to a primer, under conditions that allow the first reactive group to react with the second reactive group to form a covalent linkage; (c) optionally, where the primer is not attached to the linking unit in step (b), binding a primer to the linking unit; (d) contacting the nucleic acid sequence and the primer with a nucleic acid polymerase under conditions which allow the nucleic acid polymerase to produce a nucleic acid molecule from the primer based on the template nucleic acid sequence such that priming of nucleic acid synthesis occurs at or within less than 5 bases of the target site; (e) detecting the presence or absence of the produced nucleic acid molecule so as to determine the presence or availability of the target site, wherein the covalent linkage formed in step (b) does not attach the linking unit to the template nucleic acid sequence via a terminal nucleotide of the template nucleic acid sequence, and wherein the enzyme is a DNA methyltransferase which is capable of using the compound as a co-factor. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32)
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Specification