| CPC C12N 15/1031 (2013.01) [C12N 15/1093 (2013.01); C12N 15/66 (2013.01); C12Q 1/686 (2013.01)] | 26 Claims |
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1. A method of producing a nucleic acid having a predefined sequence, the method comprising:
(a) providing a first pool of double-stranded oligonucleotides, wherein the double-stranded oligonucleotides comprise:
(i) internal sequences identical to different portions of a first target nucleic acid, wherein the internal sequences comprise an overlapping region with another double-stranded oligonucleotide in the first pool; and
(ii) 5′ flanking sequences and/or 3′ flanking sequences, each of the flanking sequences comprising a common primer recognition site and a first restriction enzyme recognition site, the first restriction enzyme recognition site being oriented so that digestion with a first restriction enzyme that recognizes the first restriction enzyme recognition site will remove the flanking sequences and expose the internal sequence; and
(b) exposing the first pool of double-stranded oligonucleotides to a ligase and the first restriction enzyme under conditions suitable to promote concurrent restriction enzyme digestion and ligation, thereby generating the first target nucleic acid;
wherein the first target nucleic acid comprises:
(i) an internal sequence identical to a portion of a final target nucleic acid; and
(ii) a 5′ flanking sequence and/or a 3′ flanking sequence, each of the flanking sequences comprising a second restriction enzyme recognition site, wherein the first restriction enzyme recognition site and the second restriction enzyme recognition site have different sequences.
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