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  • Title: In vivo formation of gene fusions encoding hybrid beta-galactosidase proteins in one step with a transposable Mu-lac transducing phage.
    Author: Casadaban MJ, Chou J.
    Journal: Proc Natl Acad Sci U S A; 1984 Jan; 81(2):535-9. PubMed ID: 6320194.
    Abstract:
    A Mu-lac bacteriophage transposon, MudII301 (Ap, lac), was constructed to form hybrid protein gene fusions. When it integrates into structural genes in the appropriate direction and reading phase, transcription and translation from outside gene controlling regions can proceed across 116 nucleotides from the right end of Mu into lacZ codons to form hybrid proteins that are enzymatically active for beta-galactosidase. Integration can be obtained either by infection to form lysogens or by transposition during growth of a lysogen. The size of the hybrid protein product either corresponds to or, in the cases of translation restart or protein degradation, is a minimal estimate of the distance of the Mu insertion from the translation initiation site of the gene. Hybrid proteins formed by insertions in randomly selected genes and in the araB and A genes were examined by polyacrylamide gel electrophoresis.
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