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RecA-Directed Hybridization of Psoralen-Monoadducted DNA Oligonucleotides to Duplex Targets

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Photochemical Probes in Biochemistry

Part of the book series: NATO ASI Series ((ASIC,volume 272))

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Abstract

RecA protein can be used to introduce a psoralen-monoadducted DNA oligonucleotide into a duplex target site-specifically. Irradiation of the three-stranded DNA complex with long wavelength ultraviolet light results in formation of a site-specific crosslink between the inserted oligomer and its complement. Crosslinked complexes have been formed between pUC19 plasmid and modified oligomers ranging from 30 to 107 nucleotides in length. The efficiency of this two-step process depends upon several factors, including the nucleotide cofactor for RecA, the length of the oligomeric substrate, and the position of the psoralen adduct relative to the 5’-end of the oligomer. Absolute homology is not required.

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© 1989 Kluwer Academic Publishers

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Cheng, S., Gamper, H.B., Hearst, J.E. (1989). RecA-Directed Hybridization of Psoralen-Monoadducted DNA Oligonucleotides to Duplex Targets. In: Nielsen, P.E. (eds) Photochemical Probes in Biochemistry. NATO ASI Series, vol 272. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0925-0_12

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  • DOI: https://doi.org/10.1007/978-94-009-0925-0_12

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-6905-2

  • Online ISBN: 978-94-009-0925-0

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