Scaffold-based polymerase enzyme substrates
First Claim
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1. A composition comprising a covalent compound of the structure:
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(DLD)n-X-(LNPN)m wherein each D is a fluorescent dye moiety, X is a multifunctional core with multiple linking sites, each P is a polyphosphate moiety having the structure;
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Abstract
The invention provides a novel class of scaffold-based labeled polymerase enzyme substrates. The polymerase enzyme substrates have a multivalent core or scaffold to which is attached fluorescent dye moieties and nucleoside phosphate moities. The polymerase enzyme substrates have multiple fluorescent dye moities and/or multiple nucleoside phosphate moieties. Preferred multivalent cores comprise trifunctional six membered aromatic moities. The invention also provides for sequencing methods and kits with scaffold-based labeled polymerase enzyme substrates.
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Citations
20 Claims
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1. A composition comprising a covalent compound of the structure:
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(DLD)n-X-(LNPN)mwherein each D is a fluorescent dye moiety, X is a multifunctional core with multiple linking sites, each P is a polyphosphate moiety having the structure; - View Dependent Claims (2, 3, 4, 7, 8)
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5. The composition of claim l wherein X comprises the structure:
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6. The composition of claim l wherein X comprises the structure:
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9. A composition comprising a covalent compound having the structure:
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Y-(L-D-P—
N)mwherein Y is a multifunctional core having m linking sites, each L is either a direct bond or a linker, each D is a fluorescent dye moiety, each P is a polyphosphate having the structure; - View Dependent Claims (10)
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- 11. A composition comprising a compound having the structure:
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16. A composition comprising a covalent compound of the structure:
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(DLD)n-X-(LNPN)mwherein each D is a fluorescent dye moiety, X is a multifunctional core with multiple linking sites, each P is a polyphosphate moiety having 2 to 10 phosphates, each N is a nucleoside moiety, n is 2 or greater, m+n=4 or greater, and each LD and LN are either direct bonds or linkers, wherein X comprises the structure;
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17. A composition comprising a covalent compound of the structure:
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(DLD)n-X-(LNPN)mwherein each D is a fluorescent dye moiety, X is a multifunctional core with multiple linking sites, each P is a polyphosphate moiety having 2 to 10 phosphates, each N is a nucleoside moiety, n is 2 or greater, m+n=4 or greater, and each LD and LN are either direct bonds or linkers, wherein X comprises the structure;
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18. A composition comprising a covalent compound of the structure:
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(DLD)n-X-(LNPN)mwherein each D is a fluorescent dye moiety, X is a multifunctional core with multiple linking sites, each P is a polyphosphate moiety having 2 to 10 phosphates, each N is a nucleoside moiety, n is 2 or greater, m+n=4 or greater, and each LD and LN are either direct bonds or linkers, wherein X comprises the structure;
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19. A sequencing mixture comprising a set of 4 nucleotide analog substrates, each having one of the bases A, G, C, T, or A, G, C, U, at least two of the substrates having the structure:
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(DLD)n-X-(LNPN)mwherein each D is a fluorescent dye moiety, X is a multifunctional core with multiple linking sites, each P is a polyphosphate moiety having 2 to 10 phosphates, each N is a nucleoside moiety, n is 2 or greater, m+n=4 or greater, and each LD and LN are either direct bonds or linkers, wherein each substrate has at least one fluorescent dye moiety different from the fluorescent dye moieties on the other three substrates.
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20. A method for nucleic acid sequencing comprising:
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immobilizing a polymerase enzyme complex comprising a polymerase enzyme and a template nucleic acid; exposing the immobilized polymerase enzyme complex to a plurality of labeled nucleotide analog substrates, at least one of the substrates comprising a compound having the structure;
(DLD)n-X-(LNPN)mwherein each D is a fluorescent dye moiety, X is a multifunctional core with multiple linking sites, each P is a polyphosphate moiety having 2 to 10 phosphates, each N is a nucleoside moiety, n is 2 or greater, m+n=4 or greater, and each L1 and LN are either direct bonds or linkers; detecting the incorporation of substrates by observing fluorescence from the nucleotide analog substrates; and using the detected incorporation over time to obtain sequence information about the template nucleic acid.
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Specification