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Related Experiment Videos

Synthesis of DNA coding for human proinsulin.

Y A Ovchinnikov, V A Efimov, I N Ivanova

    Gene
    |November 1, 1984
    PubMed
    Summary

    Researchers chemically synthesized DNA fragments encoding human proinsulin. These fragments were assembled into a complete gene, demonstrating successful gene synthesis and cloning in E. coli.

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    [Monomers containing 2'-o-alkoxymethyl groups as synthons for the synthesis of oligoribonucleotides by the phosphotriester method].

    Bioorganicheskaia khimiia·2012

    Area of Science:

    • Molecular Biology
    • Biotechnology
    • Synthetic Biology

    Background:

    • Human proinsulin is a crucial precursor protein in insulin production.
    • Efficient synthesis of functional gene sequences is vital for biotechnological applications.

    Purpose of the Study:

    • To chemically-enzymatically synthesize DNA duplexes encoding the human proinsulin gene.
    • To create a functional tandem proinsulin gene for potential expression.

    Main Methods:

    • Chemical synthesis of 42 oligonucleotides using the N-methylimidazolide phosphotriester method.
    • Enzymatic conversion of oligonucleotides into gene subfragments.
    • Cloning and fusion of subfragments to create 271-bp and 286-bp DNA duplexes, and a 568-bp tandem gene.

    Main Results:

    • Successful synthesis of 271-bp and 286-bp DNA duplexes containing the human proinsulin coding sequence.
    • Assembly of a 568-bp tandem proinsulin gene.
    • Cloning of proinsulin gene fragments in Escherichia coli and verification of correct sequences.

    Conclusions:

    • The study demonstrates a viable chemical-enzymatic approach for synthesizing complex gene sequences like human proinsulin.
    • The synthesized DNA fragments and the tandem gene possess the correct sequences, paving the way for further functional studies and applications.

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