Method for identifying a nucleic acid sequence
US6190868A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1999 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Sep 23, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q1/6855
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The present invention discloses a methodology which is directed to providing positive confirmation that nucleic acids, possessing putatively identified sequence predicted to generate observed GeneCalling.TM. signals, are actually present within the sample from which the signal was originally derived. The putatively identified nucleic acid fragment within the sample possesses 3'- and 5'-ends with known terminal subsequences, said method comprising; contacting said nucleic acid fragments in said sample in amplifying conditions with (i) a nucleic acid polymerase; (ii) "regular" primer oligonucleotides having sequences comprising hybridizable portions of said known terminal subsequences; and (iii) a "poisoning" oligonucleotide primer, said poisoning primer having a sequence comprising a first subsequence that is a portion of the sequence of one of said known terminal subsequences and a second subsequence that is a hybridizable portion of said putatively unidentified sequence which is adjacent to said one known terminal subsequence, wherein nucleic acids amplified with said poisoning primer are distinguishable upon detection from nucleic acids amplified with said nucleic acids amplified…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.