4ON9:
reference: Crystal and solution structure of the human RIG-I SF2 domain., Deimling T, Cui S, Lammens K, Hopfner KP, Witte G, Acta Crystallogr F Struct Biol Commun. 2014 Aug;70(Pt 8):1027-31. doi:, 10.1107/S2053230X14012230. Epub 2014 Jul 23. PMID: 25084375

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