4EML:
reference: Active Site Binding and Catalytic Role of Bicarbonate in 1,4-Dihydroxy-2-naphthoyl Coenzyme A Synthases from Vitamin K Biosynthetic Pathways., Sun Y, Song H, Li J, Jiang M, Li Y, Zhou J, Guo Z, Biochemistry. 2012 May 24. PMID: 22606952

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