4AKS:
reference: The mechanism of patellamide macrocyclization revealed by the characterization of the PatG macrocyclase domain., Koehnke J, Bent A, Houssen WE, Zollman D, Morawitz F, Shirran S, Vendome J, Nneoyiegbe AF, Trembleau L, Botting CH, Smith MC, Jaspars M, Naismith JH, Nat Struct Mol Biol. 2012 Jul 15;19(8):767-72. doi: 10.1038/nsmb.2340. Epub 2012 , Jul 15. PMID: 22796963

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