Methods and compositions for incorporating nucleotides
The invention provides methods and compositions, including, without limitation, algorithms, computer readable media, computer programs, apparatus, and systems for determining the identity of nucleic acids in nucleotide sequences using, for example, data obtained from sequencing by synthesis methods. The methods of the invention include correcting one or more phenomena that are encountered during nucleotide sequencing, such as using sequencing by synthesis methods. These phenomena include, without limitation, sequence lead, sequence lag, spectral crosstalk, and noise resulting from variations in illumination and/or filter responses.
1. A method of incorporating labeled nucleotides into nucleic acid, comprising: a) providing i) a reaction chamber comprising plurality of nucleic acid template molecules bound to a solid support, ii) a solution comprising a first plurality of nucleotide analogues wherein each nucleotide analogue is labeled with a unique label and contains a removable chemical moiety capping the 3′-OH group, and a second plurality of nucleotide analogues wherein each nucleotide analogue is unlabeled and contains a removable chemical moiety capping the 3′-OH group; and iii) polymerase; b) introducing said solution into said reaction chamber under conditions wherein a nucleotide analogue of said first plurality of nucleotide analogues is incorporated by said polymerase; and c) detecting the label of the incorporated nucleotide analogue.
2. The method of claim 1 , wherein said polymerase is in said solution prior to step b).
3. The method of claim 1 , wherein said first nucleotide is incorporated at step b) into a plurality of primers hybridized to said plurality of nucleic acid template molecules.
4. The method of claim 1 , wherein each of said plurality of nucleic acid template molecules comprises a self-priming hairpin, and said first nucleotide is incorporated at step b) into said template.
5. The method of claim 1 , wherein the second plurality of nucleotide analogues is present in said solution at a higher concentration than said first plurality of nucleotide analogues.
6. The method of claim 1 , wherein said second plurality of nucleotide analogues is present at a concentration between 1 uM and 100 uM.
7. The method of claim 1 , wherein said first plurality of nucleotide analogues is present at a concentration between 1 nM and 1 uM.
8. The method of claim 1 , wherein said first plurality of nucleotide analogues comprises four different nucleotide analogues.
9. The method of claim 8 , wherein said second plurality of nucleotide analogues comprises four different nucleotide analogues.
10. The method of claim 8 , wherein each of said four different nucleotide analogues comprises a unique label, said label selected from the group consisting of BODIPY, Rhodamine, Carboxyrhodamine, and Cyanine.
11. The method of claim 1 , wherein said removable chemical moiety comprises a disulfide bond.
12. The method of claim 1 , wherein said removable chemical moiety comprises an azido group.
13. The method of claim 1 , wherein said cleavable linker comprises a disulfide bond.
14. The method of claim 1 , wherein said removable chemical moiety comprises an azido group and said cleavable linker comprises a disulfide bond.
15. A method of incorporating labeled nucleotides into nucleic acid, comprising: a) providing i) a reaction chamber comprising plurality of nucleic acid template molecules bound to a solid support, ii) a solution comprising a first plurality of four different nucleotide analogues wherein each nucleotide analogue is labeled with a unique label attached via a cleavable linker and contains a removable chemical moiety capping the 3′-OH group, and a second plurality of nucleotide analogues wherein each nucleotide analogue is unlabeled and contains a removable chemical moiety capping the 3′-OH group; and iii) polymerase; b) introducing said solution into said reaction chamber under conditions wherein a nucleotide analogue of said first plurality of nucleotide analogues is incorporated by said polymerase; and c) detecting the label of the incorporated nucleotide analogue.
16. The method of claim 15 , wherein said polymerase is in said solution prior to step b).
17. The method of claim 15 , wherein said first nucleotide is incorporated at step b) into a plurality of primers hybridized to said plurality of nucleic acid template molecules.
18. A method of incorporating labeled nucleotides into nucleic acid, comprising: a) providing i) a reaction chamber comprising plurality of nucleic acid template molecules bound to a solid support, ii) a first solution comprising a first plurality of four different nucleotide analogues wherein each nucleotide analogue is labeled with a unique label attached via a cleavable linker and contains a removable chemical moiety capping the 3′-OH group, and a second plurality of nucleotide analogues wherein each nucleotide analogue is unlabeled and contains a removable chemical moiety capping the 3′-OH group, iii) a second solution lacking labeled nucleotide analogues and comprising a plurality of nucleotide analogues wherein each nucleotide analogue is unlabeled and contains a removable chemical moiety capping the 3′-OH group, and iv) polymerase; b) introducing said first solution into said reaction chamber under conditions wherein a nucleotide analogue of said first plurality of nucleotide analogues is chamber; and d) detecting the label of the incorporated nucleotide analogue.
19. The method of claim 18 , wherein said polymerase is in said solution prior to step b).
20. The method of claim 18 , wherein said first nucleotide is incorporated at step b) into a plurality of primers hybridized to said plurality of nucleic acid template molecules.
21. The method of claim 18 , further comprising washing before step d).
22. The method of claim 18 , further comprising removing the label of the incorporated analogue.
23. The method of claim 22 , further comprising repeating steps b), c) and d).