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  • Title: In-frame linker insertion mutagenesis of yeast transposon Ty1: mutations, transposition and dominance.
    Author: Monokian GM, Braiterman LT, Boeke JD.
    Journal: Gene; 1994 Feb 11; 139(1):9-18. PubMed ID: 8112595.
    Abstract:
    A plasmid bearing a GAL1::Ty1 fusion that is competent to transpose was mutagenized by insertion of oligodeoxyribonucleotides that precisely introduce four or five codons semirandomly throughout the plasmid. Approximately one quarter of these resulted in inactivation of transposition; these include inactivating insertions in both the TYA and TYB genes, corresponding to retroviral gag and pol genes. Examples of transposition-inactivating mutations map within each of the known or proposed functional domains of TYB, suggesting that these are all required for retrotransposition. All of the transposition-inactivating mutations were found to be recessive with the exception of a single mutation in TYA. The remaining mutations have slightly deleterious to no effect on Ty1 transposition.
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