1GJ1:
reference: Synthesis, characterization and solution structure of tethered oligonucleotides containing an internal 3'-phosphoglycolate, 5'-phosphate gapped lesion., Junker HD, Hoehn ST, Bunt RC, Marathius V, Chen J, Turner CJ, Stubbe J, Nucleic Acids Res 2002 Dec 15;30(24):5497-508. PMID: 12490718

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