4ZM3:
reference: Mechanism-based Trapping of the Quinonoid Intermediate Using the K276R Mutant of PLP-Dependent 3-Aminobenzoate Synthase PctV in the Biosynthesis of Pactamycin., Hirayama A, Miyanaga A, Kudo F, Eguchi T, Chembiochem. 2015 Oct 1. doi: 10.1002/cbic.201500426. PMID: 26426567

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