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Abstract

Oligonucleotide chemistry is central to the advancement of core technologies such as DNA sequencing, forensic and genetic analysis and has impacted greatly on the discipline of molecular biology. Oligonucleotides and their analogues are essential tools in these areas. They are often produced by automated solid-phase phosphoramidite synthesis but it is difficult to synthesize long DNA and RNA sequences by this method. Methods are proposed for ligating oligonucleotides together, in particular the use of an azide-alkyne coupling reaction to ligate the backbones of oligonucleotides together to form longer oligonucleotides than can be synthesized using current phosphoramidite synthesis methods.

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