1K4X:
reference: The effect of sodium, potassium and ammonium ions on the conformation of the dimeric quadruplex formed by the Oxytricha nova telomere repeat oligonucleotide d(G(4)T(4)G(4))., Schultze P, Hud NV, Smith FW, Feigon J, Nucleic Acids Res 1999 Aug 1;27(15):3018-28. PMID: 10454595

This OCA Structure page
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