Allele specific primer extension

C - Chemistry – Metallurgy – 12 – P

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C12P 19/34 (2006.01) C12Q 1/68 (2006.01)

Patent

CA 2496462

A method of characterizing a nucleic acid sample is provided that includes the steps of: (a) conducting a DNA polymerase reaction that includes the reaction of a template, an allele specific primer, at least one terminal phosphate- labeled nucleotide, DNA polymerase, and optionally an enzyme having 3' 5' exonuclease activity when the primer is non-hydrolyzable, which reaction results in the production of labeled polyphosphate; (b) permitting the labeled polyphosphate to react with a phosphatase to produce a detectable species; (c) detecting the detectable species; and (d) characterizing the nucleic acid sample based on such detection.

L'invention concerne un procédé permettant de caractériser un échantillon d'acide nucléique, selon les étapes suivantes: (a) réaction de la polymérase d'ADN avec réaction sur gabarit, amorce spécifique à l'allèle, au moins un nucléotide à marquage phosphate terminal, polymérase de l'ADN, et éventuellement enzyme ayant une activité d'exonucléase 3'.fwdarw.5' lorsque l'amorce est non hydrolysable, cette réaction entraînant la production de polyphosphate marqué; (b) conditions permettant la réaction de ce polyphosphate marqué avec une phosphatase pour la production d'une espèce détectable; (c) détection de l'espèce détectable; et (d) caractérisation de l'échantillon d'acide nucléique sur la base de cette détection.?.¿

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