3FHP:
reference: A neutron crystallographic analysis of T6 porcine insulin at 2.1 A resolution., Iwai W, Yamada T, Kurihara K, Ohnishi Y, Kobayashi Y, Tanaka I, Takahashi H, Kuroki R, Tamada T, Niimura N, Acta Crystallogr D Biol Crystallogr. 2009 Oct;65(Pt 10):1042-50. Epub 2009, Sep 16. PMID: 19770501

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