2N9Q:
reference: Photoresponsive Formation of an Intermolecular Minimal G-Quadruplex Motif., Thevarpadam J, Bessi I, Binas O, Goncalves DP, Slavov C, Jonker HR, Richter C, Wachtveitl J, Schwalbe H, Heckel A, Angew Chem Int Ed Engl. 2016 Feb;55(8):2738-42. doi: 10.1002/anie.201510269. Epub, 2016 Jan 25. PMID: 26805928

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