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US 5,667,971 AGranted
Method for determining DNA sequences
AssigneeDade Chemistry Systems Inc.
InventorAlan M. Hochberg
Life of this patent
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Abstract
A method is disclosed for determining the sequence of DNA bases by using two electrophoretic lanes for each DNA sample to be sequenced. Each lane incorporates two dyes.
Claims9
A method for sequencing DNA to ascertain the sequence of the four bases G, C, A, and T comprising the steps of:
- 1) producing a first set of reporter labelled DNA fragments for two of the four bases, each base having a different reporter;
- 2) producing a second set of reporter labelled DNA fragments for the remaining two of the four bases, each base having a different reporter;
- 3) separating the respective first and second sets by gel electrophoresis;
- 4) generating a first signal for each of the respective sets that varies in amplitude to form peaks in accordance with a characteristic of the reporter and the rate at which the labelled base moves through the gel;
- 5) generating a second signal for each of the respective sets that varies in amplitude to form peaks in accordance with a characteristic of the reporter and the rate at which the labelled base moves through the gel;
- 6) dividing each of the first and second sets into corresponding blocks of bases;
- 7) selecting the amount of shift between the corresponding blocks of the first and second sets which minimizes peak to peak variance, and;
- 8) interpolating the shifts between the corresponding blocks of the first and second sets to align the first and second sets into a single set of four signals corresponding to the four bases in the order of their movement through the gel.
5 more elements
Dependencies are inferred from the claim text.