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X-junction (plural X-junctions)

  1. A non-linear strand of DNA where certain cruciform binding proteins can compete for binding.
    • 1998, Jac A Nickoloff, Merl F Hoekstra, DNA Damage and Repair: Volume I: DNA Repair in Prokaryotes and Lower Eukaryotes []
      Page 197 - "Linear molecules containing the same sequences are not bound, and one X-junction successfully competes with another for binding whereas linear duplexes do not compete."