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  • Title: Ligation-independent cloning of glutathione S-transferase fusion genes for expression in Escherichia coli.
    Author: Haun RS, Moss J.
    Journal: Gene; 1992 Mar 01; 112(1):37-43. PubMed ID: 1339364.
    Abstract:
    A plasmid vector has been constructed that allows the ligation-independent cloning of cDNAs in any reading frame and directs their synthesis in Escherichia coli as glutathione S-transferase-linked fusion proteins. The cloning procedure does not require restriction enzyme digestion of the target sequence and does not introduce any additional sequences between the thrombin cleavage site and the foreign protein. Extended single-stranded tails complementary between the vector and insert, generated by the (3'----5') exonuclease activity of T4 DNA polymerase, obviate the need for in vitro ligation prior to bacterial transformation. This cloning procedure is rapid and highly efficient, and has been used successfully to construct a series of fusion proteins to investigate the sequence requirements for efficient thrombin cleavage.
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