Nucleic acid sequences using tags
First Claim
1. A method for assembling a protein having a plurality of subunits, the method comprising:
- a) providing a plurality of first subunits;
b) providing a plurality of second subunits, wherein the second subunits are modified with respect to the first subunits;
c) contacting the first subunits with the second subunits in a first ratio to form a plurality of proteins having the first subunits and the second subunits, wherein the plurality of proteins have a plurality of ratios of the first subunits to the second subunits; and
d) fractionating the plurality of proteins using ion-exchange chromatography to enrich proteins that have a second ratio of the first subunits to the second subunits, wherein the second ratio is one second subunit per (n−
1) first subunits, wherein ‘
n’
is the number of subunits comprising the protein.
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Accused Products
Abstract
This disclosure provides chips, systems and methods for sequencing a nucleic acid sample. Tagged nucleotides are provided into a reaction chamber comprising a nanopore in a membrane. An individual tagged nucleotide of the tagged nucleotides can contain a tag coupled to a nucleotide, which tag is detectable with the aid of the nanopore. Next, an individual tagged nucleotide of the tagged nucleotides can be incorporated into a growing strand complementary to a single stranded nucleic acid molecule derived from the nucleic acid sample. With the aid of the nanopore, a tag associated with the individual tagged nucleotide can be detected upon incorporation of the individual tagged nucleotide. The tag can be detected with the aid of the nanopore when the tag is released from the nucleotide.
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Citations
19 Claims
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1. A method for assembling a protein having a plurality of subunits, the method comprising:
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a) providing a plurality of first subunits; b) providing a plurality of second subunits, wherein the second subunits are modified with respect to the first subunits; c) contacting the first subunits with the second subunits in a first ratio to form a plurality of proteins having the first subunits and the second subunits, wherein the plurality of proteins have a plurality of ratios of the first subunits to the second subunits; and d) fractionating the plurality of proteins using ion-exchange chromatography to enrich proteins that have a second ratio of the first subunits to the second subunits, wherein the second ratio is one second subunit per (n−
1) first subunits, wherein ‘
n’
is the number of subunits comprising the protein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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- 16. A nanopore comprising a plurality of subunits, wherein a polymerase is attached to one of the subunits and at least one and less than all of the subunits comprise a first purification tag, and wherein the first purification tag is on the subunits not having the polymerase attached.
Specification