Modified nucleosides and nucleotides and uses thereof
First Claim
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1. A modified nucleotide consisting of a guanine base or a 7-deazaguanine base attached to a fluorophore through a linking group, one or more phosphate groups, and a ribose or 2′
- -deoxyribose having a blocking group attached to the 3′
oxygen atom thereof, wherein said linking group comprises a spacer group of formula —
((CH2)2O)n—
wherein n is an integer between 10 and 30, and wherein the presence of the linking group reduces fluorescent signal quenching of the fluorophore by the guanine base or 7-deazaguanine base.
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Abstract
The invention is directed to modified guanine-containing nucleosides and nucleotides and uses thereof. More specifically, the invention relates to modified fluorescently labelled guanine-containing nucleosides and nucleotides which exhibit enhanced fluorophore intensity by virtue of reduced quenching effects.
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Citations
14 Claims
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1. A modified nucleotide consisting of a guanine base or a 7-deazaguanine base attached to a fluorophore through a linking group, one or more phosphate groups, and a ribose or 2′
- -deoxyribose having a blocking group attached to the 3′
oxygen atom thereof, wherein said linking group comprises a spacer group of formula —
((CH2)2O)n—
wherein n is an integer between 10 and 30, and wherein the presence of the linking group reduces fluorescent signal quenching of the fluorophore by the guanine base or 7-deazaguanine base. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- -deoxyribose having a blocking group attached to the 3′
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10. A modified nucleotide consisting of a guanine base or a 7-deazaguanine base attached to a fluorophore through a linking group, one or more phosphate groups, and a ribose, 2′
- -deoxyribose or 2′
, 3′
dideoxyribose, wherein said linking group comprises a spacer group of formula —
((CH2)2O)n—
wherein n is an integer between 10 and 30, and wherein the presence of the linking group reduces fluorescent signal quenching of the fluorophore by the guanine base or 7-deazaguanine base. - View Dependent Claims (11, 12, 13, 14)
- -deoxyribose or 2′
Specification