1CS2:
reference: An NMR and molecular modelling analysis of d(CTACTGCTTTAG). d(CTAAAGCAGTAG) reveals that the particular behaviour of TpA steps is related to edge-to-edge contacts of their base-pairs in the major groove., Leporc S, Mauffret O, Tevanian G, Lescot E, Monnot M, Fermandjian S, Nucleic Acids Res 1999 Dec 15;27(24):4759-67. PMID: 10572176

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