5OCD:
reference: Structural basis for partition of the cyclodipeptide synthases into two subfamilies., Bourgeois G, Seguin J, Babin M, Belin P, Moutiez M, Mechulam Y, Gondry M, Schmitt E, J Struct Biol. 2018 Jul;203(1):17-26. doi: 10.1016/j.jsb.2018.03.001. Epub 2018, Mar 2. PMID: 29505829

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