6O9A:
reference: Menaquinone Biosynthesis: Biochemical and Structural Studies of Chorismate Dehydratase., Mahanta N, Hicks KA, Naseem S, Zhang Y, Fedoseyenko D, Ealick SE, Begley TP, Biochemistry. 2019 Mar 22. doi: 10.1021/acs.biochem.9b00105. PMID: 30855131

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