Cyanine dye activating group with improved coupling selectivity
First Claim
Patent Images
1. An activated dye having the formula:
- ##STR1## wherein X is selected from the group consisting of --CH═
CH--CH═
CH--CH═
, and --CH═
CH--CH═
CH--CH═
CH--CH═
; and
wherein R1 is ##STR2## or --H; and
wherein R2 is ##STR3## or --H; and
further wherein R1 and R2 are not both --H.
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Abstract
Activating groups for cyanine dyes used to label chain terminators in nucleotide sequencing, based on N-hydroxyphthalimide, are disclosed. From these activating groups, activated dyes of the present Invention are prepared which react with the derivitized nucleotide chain terminators to give a labeled chain terminator of the present Invention. The activating groups of the present Invention allow the dye-chain terminator reaction to occur at a much higher yield and with much greater selectivity for the mono-substituted product, compared with the prior art.
110 Citations
25 Claims
-
1. An activated dye having the formula:
- ##STR1## wherein X is selected from the group consisting of --CH═
CH--CH═
CH--CH═
, and --CH═
CH--CH═
CH--CH═
CH--CH═
; andwherein R1 is ##STR2## or --H; and
wherein R2 is ##STR3## or --H; and
further wherein R1 and R2 are not both --H.
- ##STR1## wherein X is selected from the group consisting of --CH═
-
2. An activated dye having the formula:
- ##STR4## wherein X is selected from the group consisting of --CH═
CH--CH═
CH--CH═
, and --CH═
CH--CH═
CH--CH═
CH--CH═
; andwherein R1 is ##STR5## or --H; and
wherein R2 is ##STR6## or --H; and
further wherein R1 and R2 are not both --H.
- ##STR4## wherein X is selected from the group consisting of --CH═
-
3. A dye-labeled chain terminator having the formula:
-
space="preserve" listing-type="equation">A--X--Bwherein A is a cyanine dye selected from the group consisting of ##STR7## wherein Y is selected from the group consisting of --CH═
CH--CH═
CH--CH═
, and --CH═
CH--CH═
CH--CH═
CH--CH═
; andwherein B is selected from the group consisting of ##STR8## wherein Z is ##STR9## and wherein X is a linking group that results from reacting A and N-hydroxyphthalimide to produce an activated dye; and
thereafter reacting said activated dye with B. - View Dependent Claims (20, 21, 22, 23, 24, 25)
-
-
4. A method for preparing an activated dye having a formula selected from the group consisting of:
- ##STR10## wherein X is selected from the group consisting of --CH═
CH--CH═
CH--CH═
, and --CH═
CH--CH═
CH--CH═
CH--CH═
; andwherein R1 is ##STR11## or --H; and
wherein R2 is ##STR12## or --H; and
further wherein R1 and R2 are not both --H;which comprises; combining a suitable cyanine dye with carbonyliimidazole to form a mixture; and adding to said mixture N-hydroxyphthalimide to form a final mixture. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- ##STR10## wherein X is selected from the group consisting of --CH═
Specification