DNA sequencing
First Claim
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1. A method for sequencing a strand of DNA, comprising the steps of:
- providing said strand of DNA,annealing said strand with a primer able to hybridize to said strand, to give an annealed mixture, andincubating said annealed mixture with a deoxyribonucleoside triphosphate, a DNA polymerase, and a first chain terminating agent, under conditions in which said polymerase causes said primer to be elongated to form a first series of first DNA products differing in the length of the elongated primer, each said first DNA product having a said chain terminating agent at its elongated end, the number of each said first DNA products being approximately the same for substantially all DNA products differing in length from 1 to 20 bases.
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Abstract
A method for sequencing a strand of DNA, including the steps of: providing the strand of DNA; annealing the strand with a primer able to hybridize to the strand to give an annealed mixture; incubating the mixture with a deoxyribonucleoside triphosphate, a DNA polymerase, and a chain terminating agent under conditions in which the polymerase causes the primer to be elongated to form a series of DNA products differing in length of the elongated primer, each DNA product having a chain terminating agent at its elongated end; the number of each DNA product being approximately the same for substantially all DNA products differing in length from 1 to 20 bases.
129 Citations
48 Claims
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1. A method for sequencing a strand of DNA, comprising the steps of:
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providing said strand of DNA, annealing said strand with a primer able to hybridize to said strand, to give an annealed mixture, and incubating said annealed mixture with a deoxyribonucleoside triphosphate, a DNA polymerase, and a first chain terminating agent, under conditions in which said polymerase causes said primer to be elongated to form a first series of first DNA products differing in the length of the elongated primer, each said first DNA product having a said chain terminating agent at its elongated end, the number of each said first DNA products being approximately the same for substantially all DNA products differing in length from 1 to 20 bases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for sequencing a strand of DNA, comprising the steps of:
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providing a DNA polymerase, and incubating said polymerase and said strand of DNA in a solution comprising a manganese or iron ion and a chain terminating agent. - View Dependent Claims (18, 19, 21)
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17. A method for producing a DNA polymerase useful for DNA sequencing, comprising the step of mixing said DNA polymerase in a solution comprising a manganese or iron ion.
- 20. A solution comprising a T7-type DNA polymerase, or Taq polymerase, and a manganese or iron ion.
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24. A kit for sequencing DNA comprising:
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a DNA polymerase, a chain terminating agent, and a manganese or iron ion. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A method for sequencing DNA comprising:
providing a DNA polymerase which is substantially non-discriminating for a chain terminating agent.
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31. A method for automated sequencing of DNA, comprising the steps of:
providing a polymerase which is substantially non-discriminating for a chain terminating agent and causes production of a series of DNA products differing in molecular weight and terminating with the same chain terminating agent, and separating said DNA products by gel permeation according to molecular weight to form a series of bands, wherein said DNA products produce substantially all nearby bands of approximately the same intensity. - View Dependent Claims (32)
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33. An automated DNA sequencing apparatus comprising:
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a reactor for providing at least two series of DNA products formed from a single primer and a DNA strand, each said DNA product of a said series differing in molecular weight and having a chain terminating agent as one end, separating means for separating said DNA products to form a series of bands, the intensity of substantially all nearby bands in a series being approximately the same, and the intensity of substantially all nearby bands in any one series being different from those of other series, band reading means for determining the position and intensity of each said band after said separating, and computing means for determining the DNA sequence of said DNA strand directly from said position and intensity of said bands. - View Dependent Claims (34, 35, 36, 37)
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- 38. A solution for use in a DNA sequencing reaction comprising a DNA polymerase together with an unbound pyrophosphatase.
- 42. A kit for use in DNA sequencing reaction comprising a DNA polymerase and a pyrophosphatase together in a solution.
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46. Method for sequencing DNA comprising the steps of:
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providing a DNA molecule to be sequenced, contacting said DNA molecule with a DNA polymerase and a pyrophosphatase in the presence of deoxyribonucleoside triphosphates and one or more chain terminating agents to form a mixture of chain terminated DNA fragments, and separating said DNA fragments according to size so that at least a portion of said sequence can be determined.
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47. T7 DNA polymerase Δ
- Lys 118-Arg 145.
- View Dependent Claims (48)
Specification