Column for DNA separation by matched ion polynucleotide chromatography
US6372142B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2000 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Feb 10, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N15/101
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved separation column and method for separating a mixture of double stranded DNA fragments by Matched Ion Polynucleotide Chromatography. The cylindrical column has an ID greater than about 5 mm and contains polymer beads. The beads have an average diameter of 1 to 100 microns and are unsubstituted polymer beads or are polymer beads substituted with a hydrocarbon moiety having from 1 to 1,000,000 carbons. The preferred beads are characterized by being substantially free from multivalent cations which are free to bind with DNA. The improved column provides enhanced separation of DNA fragments with sizes ranging from about 100 to 20,000 base pairs. The column also provides enhanced separation of heteroduplex and homoduplex DNA molecules in a mutation detection procedure in which the chromatography is performed under conditions effecting partial denaturation of DNA at a site of mismatched base pairs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.