3T1U:
reference: Structure of a bacterial cytoplasmic cyclophilin A in complex with a tetrapeptide., Christoforides E, Dimou M, Katinakis P, Bethanis K, Karpusas M, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2012 Mar 1;68(Pt 3):259-64., Epub 2012 Feb 15. PMID: 22442217

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