4XFS:
reference: Crystallization of interleukin-18 for structure-based inhibitor design., Krumm B, Meng X, Xiang Y, Deng J, Acta Crystallogr F Struct Biol Commun. 2015 Jun 1;71(Pt 6):710-7. doi:, 10.1107/S2053230X15006871. Epub 2015 May 20. PMID: 26057800

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