2LYG:
reference: Carbohydrate-DNA interactions at G-quadruplexes: folding and stability changes by attaching sugars at the 5'-end., Gomez-Pinto I, Vengut-Climent E, Lucas R, Avino A, Eritja R, Gonzalez C, Morales JC, Chemistry. 2013 Feb 4;19(6):1920-7. doi: 10.1002/chem.201203902. Epub 2013 Jan, 11. PMID: 23315826

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