6HAG:
reference: The structure of the SAM/SAH-binding riboswitch., Weickhmann AK, Keller H, Wurm JP, Strebitzer E, Juen MA, Kremser J, Weinberg Z, Kreutz C, Duchardt-Ferner E, Wohnert J, Nucleic Acids Res. 2018 Dec 27. pii: 5264287. doi: 10.1093/nar/gky1283. PMID: 30590743

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