Simultaneous sequencing of nucleic acids
First Claim
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1. A method for the simultaneous sequencing of nucleic acids, comprising:
- (a) preparing numerous DNA fragments whose sequences are to be determined;
(b) dividing the DNA fragments to be sequenced into several groups;
(c) ligating double-stranded DNA adaptors to both ends of the divided DNA fragments from step (b) to produce DNA fragment/adaptor complexes, wherein the adaptors have a double-stranded region with a length of at least 5 nucleotides, have a first end that is compatible to the ends of the DNA fragments and a second end suitable for ligating into a vector, and wherein adaptors having different nucleotide sequences are ligated to the DNA fragments of each of the several groups;
(d) ligating DNA fragment/adaptor complexes from each of the several groups from step (c) into a base vector comprising a plurality of cleavage sites for a plurality of restriction endonucleases, which base vector has been cleaved with at least one of the restriction endonucleases, wherein the cleavage produces ends matching with the second end of one of the adaptors;
(e) selecting one vector from each of the several groups produced in step (d) and carrying out sequencing reactions on each of the ligated DNA fragment/adaptor complexes present in the selected vectors to produce sequencing products; and
(f) producing nucleotide sequence information by separating the sequencing products of step (e) from one another and thereafter identifying the separated sequencing products by hybridizing the separated sequencing products with at least one hybridization probe which comprises a DNA sequence which is complementary or identical to a 5 nucleotide portion of one adaptor of one single DNA fragment/adaptor complex.
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Abstract
The invention concerns a new method for the simultaneous sequencing of nucleic acids using numerous double-stranded DNA adaptors.
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Citations
27 Claims
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1. A method for the simultaneous sequencing of nucleic acids, comprising:
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(a) preparing numerous DNA fragments whose sequences are to be determined; (b) dividing the DNA fragments to be sequenced into several groups; (c) ligating double-stranded DNA adaptors to both ends of the divided DNA fragments from step (b) to produce DNA fragment/adaptor complexes, wherein the adaptors have a double-stranded region with a length of at least 5 nucleotides, have a first end that is compatible to the ends of the DNA fragments and a second end suitable for ligating into a vector, and wherein adaptors having different nucleotide sequences are ligated to the DNA fragments of each of the several groups; (d) ligating DNA fragment/adaptor complexes from each of the several groups from step (c) into a base vector comprising a plurality of cleavage sites for a plurality of restriction endonucleases, which base vector has been cleaved with at least one of the restriction endonucleases, wherein the cleavage produces ends matching with the second end of one of the adaptors; (e) selecting one vector from each of the several groups produced in step (d) and carrying out sequencing reactions on each of the ligated DNA fragment/adaptor complexes present in the selected vectors to produce sequencing products; and (f) producing nucleotide sequence information by separating the sequencing products of step (e) from one another and thereafter identifying the separated sequencing products by hybridizing the separated sequencing products with at least one hybridization probe which comprises a DNA sequence which is complementary or identical to a 5 nucleotide portion of one adaptor of one single DNA fragment/adaptor complex. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for converting an already existing gene bank into a modified gene bank on which a simultaneous sequencing of nucleic acids can be carried out, wherein the already existing gene bank comprises a plurality of different DNA fragments which have been ligated into a base vector at an insertion region thereof, wherein the insertion region is flanked on a side by at least one restriction endonuclease recognition sequence which contains at least one of (1) a sequence of at least 7 nucleotides and (2) a 5'"'"'-CG-3'"'"' nucleotide sequence, the method comprising:
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(a) cleaving the gene bank with an enzyme at the at least one restriction endonuclease recognition sequence to produce numerous DNA fragments; (b) dividing the DNA fragments into several groups; and (c) ligating the divided DNA fragments from step (b) with a double-stranded DNA adaptor to produce ligation products, wherein the adaptor has a double-stranded region with a length of at least 5 nucleotides and ends on both sides which are suitable for ligation with the at least one restriction endonuclease recognition sequence, and wherein an adaptor having a different nucleotide sequence is ligated to a DNA fragment from each of the several groups. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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Specification