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  • Title: Highly efficient protein trans-splicing by a naturally split DnaE intein from Nostoc punctiforme.
    Author: Iwai H, Züger S, Jin J, Tam PH.
    Journal: FEBS Lett; 2006 Mar 20; 580(7):1853-8. PubMed ID: 16516207.
    Abstract:
    Protein trans-splicing by the naturally split intein of the gene dnaE from Nostoc punctiforme (Npu DnaE) was demonstrated here with non-native exteins in Escherichia coli. Npu DnaE possesses robust trans-splicing activity with an efficiency of > 98%, which is superior to that of the DnaE intein from Synechocystis sp. strain PCC6803 (Ssp DnaE). Both the N- and C-terminal parts of the split Npu DnaE intein can be substituted with the corresponding fragment of Ssp DnaE without loss of trans-splicing activity. Protein splicing with the Npu DnaEN is also more tolerant of amino acid substitutions in the C-terminal extein sequence.
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