Sequencing reactions with monovalent cations for pulse width control
First Claim
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1. A method for performing single molecule sequencing having a pulse width within a desired range comprising:
- providing a composition comprising;
a modified recombinant phi-29 type DNA polymerase enzyme having at least 80% sequence similarity to SEQ ID NO;
1, a primer, a template nucleic acid, and a plurality of labeled nucleotide analogs wherein the composition comprises Na+ at a concentration of from about 1 mM to about 400 mM; and
observing the association of the labeled nucleotide analogs with a complex of the polymerase, primer, and template nucleic acid over time to determine a sequence of the template nucleic acid, wherein the concentration of Na+ is selected such that the single molecule sequencing reaction has a median pulse width between about 10 msec and about 400 msec.
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Abstract
Compositions, kits, methods and systems for single molecule nucleotide sequencing comprising producing polymerase reactions having lithium that control the median pulse width for incorporated nucleotides are disclosed. The levels of lithium are used to control pulse width while allowing other sequencing parameters to remain within a desirable range.
30 Citations
17 Claims
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1. A method for performing single molecule sequencing having a pulse width within a desired range comprising:
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providing a composition comprising; a modified recombinant phi-29 type DNA polymerase enzyme having at least 80% sequence similarity to SEQ ID NO;
1, a primer, a template nucleic acid, and a plurality of labeled nucleotide analogs wherein the composition comprises Na+ at a concentration of from about 1 mM to about 400 mM; andobserving the association of the labeled nucleotide analogs with a complex of the polymerase, primer, and template nucleic acid over time to determine a sequence of the template nucleic acid, wherein the concentration of Na+ is selected such that the single molecule sequencing reaction has a median pulse width between about 10 msec and about 400 msec. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification