2ZXY:
reference: Hyperstability and crystal structure of cytochrome c(555) from hyperthermophilic Aquifex aeolicus., Obuchi M, Kawahara K, Motooka D, Nakamura S, Yamanaka M, Takeda T, Uchiyama S, Kobayashi Y, Ohkubo T, Sambongi Y, Acta Crystallogr D Biol Crystallogr. 2009 Aug;65(Pt 8):804-13. Epub 2009, Jul 17. PMID: 19622864

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