Sequencing reactions with alkali metal cations for pulse width control
First Claim
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1. A composition for single molecule nucleic acid sequencing 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 a mixture of alkali metals comprising K+ at a concentration of from about 50 mM to about 300 mM, and Li+ at a concentration of from about 0.05 mM and about 40 mM.
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Abstract
Compositions, kits, methods and systems for single molecule nucleotide sequencing comprising producing polymerase reactions having monovalent cations that control the median pulse width for incorporated nucleotides are disclosed. The levels of alkali metals such as lithium, sodium, potassium, rubidium, and cesium in the polymerization are used to control pulse width while allowing other sequencing parameters to remain within a desirable range.
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12 Claims
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1. A composition for single molecule nucleic acid sequencing 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 a mixture of alkali metals comprising K+ at a concentration of from about 50 mM to about 300 mM, and Li+ at a concentration of from about 0.05 mM and about 40 mM.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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