5YTH:
reference: Unnatural Cytosine Bases Recognized as Thymines by DNA Polymerases by the Formation of the Watson-Crick Geometry., Zeng H, Mondal M, Song R, Zhang J, Xia B, Liu M, Zhu C, He B, Gao YQ, Yi C, Angew Chem Int Ed Engl. 2019 Jan 2;58(1):130-133. doi: 10.1002/anie.201807845., Epub 2018 Dec 5. PMID: 30407705

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