1C11:
reference: Centromeric pyrimidine strands fold into an intercalated motif by forming a double hairpin with a novel T:G:G:T tetrad: solution structure of the d(TCCCGTTTCCA) dimer., Gallego J, Chou SH, Reid BR, J Mol Biol 1997 Nov 7;273(4):840-56. PMID: 9367776

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