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Biocompatible artificial DNA linker that is read through by DNA polymerases and is functional in Escherichia coli.


ABSTRACT: A triazole mimic of a DNA phosphodiester linkage has been produced by templated chemical ligation of oligonucleotides functionalized with 5'-azide and 3'-alkyne. The individual azide and alkyne oligonucleotides were synthesized by standard phosphoramidite methods and assembled using a straightforward ligation procedure. This highly efficient chemical equivalent of enzymatic DNA ligation has been used to assemble a 300-mer from three 100-mer oligonucleotides, demonstrating the total chemical synthesis of very long oligonucleotides. The base sequences of the DNA strands containing this artificial linkage were copied during PCR with high fidelity and a gene containing the triazole linker was functional in Escherichia coli.

SUBMITTER: El-Sagheer AH 

PROVIDER: S-EPMC3136318 | biostudies-literature | 2011 Jul

REPOSITORIES: biostudies-literature

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Biocompatible artificial DNA linker that is read through by DNA polymerases and is functional in Escherichia coli.

El-Sagheer Afaf H AH   Sanzone A Pia AP   Gao Rachel R   Tavassoli Ali A   Brown Tom T  

Proceedings of the National Academy of Sciences of the United States of America 20110627 28


A triazole mimic of a DNA phosphodiester linkage has been produced by templated chemical ligation of oligonucleotides functionalized with 5'-azide and 3'-alkyne. The individual azide and alkyne oligonucleotides were synthesized by standard phosphoramidite methods and assembled using a straightforward ligation procedure. This highly efficient chemical equivalent of enzymatic DNA ligation has been used to assemble a 300-mer from three 100-mer oligonucleotides, demonstrating the total chemical synt  ...[more]

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