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  • Title: Preferential transfection with M13mp2 RF DNA synthesized in vitro.
    Author: Hayes RC, LeClerc JE.
    Journal: Gene; 1983; 21(1-2):1-8. PubMed ID: 6301939.
    Abstract:
    Single-strand DNA binding protein (SSB) from Escherichia coli abolishes transfection of E.coli by viral M13mp2 DNA at levels that inhibit transfection by M13mp2 replicative form (RF) DNA by approx. 25%. Synthesis of M13mp2 RF DNA (SS leads to DS) has been carried out using DNA polymerase I (Klenow fragment) and a unique 15-nucleotide primer. A time course for in vitro synthesis showed that the increase in transfection in the presence of SSB paralleled DNA synthesis after an initial lag period for transfection. Digestion of replication products with restriction endonucleases and S1 endonuclease indicates that only those molecules that are fully or almost fully duplex transfect competent cells in the presence of SSB.
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