摘要:
Methods are provided for detecting hybridization of a polynucleotide to a nucleic acid array by chemically modifying the polynucleotide to contain a detectable label. According to one aspect of the present invention, a method is provided for detecting the presence of a mRNA in a nucleic acid sample, the method having the steps of providing a mRNA sample and azido modified nucleotides, hybridizing a primer to the mRNA, reversed transcribing the mRNA to provide azido modified DNA, followed by reacting the azido groups with a detectable label, hybridizing the labeled RNA to a nucleic acid array and detecting the presence of the mRNA. Still other methods are provided for detecting the presence or absence of a polynucleotide of interest on a nucleic acid array, the method having the steps of providing a nucleic acid sample comprising a polynucleotide; providing an enzyme to amplify the polynucleotide using an azido nucleotide derivative; amplifying said polynucleotide to provide azido labeled amplified nucleic acids; reacting the azido groups on said nucleic acids with a detectable label to provide labeled nucleic acids; hybridizing said amplified nucleic acids to a nucleic acid array; and detecting the presence or absence of said polynucleotide. Still other methods are presented for detecting polynucleotides on a nucleic acid array using ligases and terminal transferases to end label polynucleotides.
摘要:
A metal chelating composition having the formula: wherein Q is a carrier; S1 is a spacer; L is -A-T-CH(X)— or —C(═O)—; A is an ether, thioether, selenoether, or amide linkage; T is a bond or substituted or unsubstituted alkyl or alkenyl; X is —(CH2)kCH3, —(CH2)kCOOH, —(CH2)kSO3H, —(CH2)kPO3H2, —(CH2)kN(J)2, or —(CH2)kP(J)2, preferably —(CH2)kCOOH or —(CH2)kSO3H; k is an integer from 0 to 2; J is hydrocarbyl or substituted hydrocarbyl; Y is —COOH, —H, —SO3H, —PO3H2, —N(J)2, or —P(J)2, preferably, —COOH; Z is —COOH, —H, —SO3H, —PO3H2, —N(J)2, or —P(J)2, preferably, —COOH; and i is an integer from 0 to 4, preferably 1 or 2.
摘要:
A metal chelating composition having the formula: wherein Q is a carrier; S1 is a spacer; L is —A—T—CH(X)— or —C(═O)—; A is an ether, thioether, selenoether, or amide linkage; T is a bond or substituted or unsubstituted alkyl or alkenyl; X is —(CH2)kCH3, —(CH2)kCOOH, —(CH2)kSO3H, —(CH2)kPO3H2, —(CH2)kN(J)2, or —(CH2)kP (J)2, preferably —(CH2)kCOOH or —(CH2)kSO3H; k is an integer from 0 to 2; J is hydrocarbyl or substituted hydrocarbyl; Y is —COOH, —H, —SO3H, —PO3H2, —N(J)2, or —P(J)2, preferably, —COOH; Z is —COOH, —H, —SO3H, —PO3H2, —N(J)2, or —P(J)2, preferably, —COOH; and i is an integer from 0 to 4, preferably 1 or 2.