2OLN:
reference: NikD, an unusual amino acid oxidase essential for nikkomycin biosynthesis: structures of closed and open forms at 1.15 and 1.90 A resolution., Carrell CJ, Bruckner RC, Venci D, Zhao G, Jorns MS, Mathews FS, Structure. 2007 Aug;15(8):928-41. PMID: 17697998

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