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. 2021 Mar 30;9:650961. doi: 10.3389/fbioe.2021.650961

FIGURE 5.

FIGURE 5

Influence of ubiA expression on pHBA production by the strain UBI400 (pRG_Duet2-ddsA-ubiA). (A) Pathway from the precursor FPP toward the intermediate 10P-HB with heterologously expressed ddsA and ubiA marked in blue and green, respectively. (B) The expression of ubiA was induced or not induced via addition of ATc either with or without the additional induction of ddsA expression via addition of IPTG. The concentration of pHBA was measured in the respective supernatants. IPP, isopentenyl diphosphate; FPP, farnesyl diphosphate; DPP, decaprenyl diphosphate; DPP, decaprenyl diphosphate; 10P-HB, 3-decaprenyl-4-hydroxybenzoate; ddsA, decaprenyl diphosphate synthase from P. denitrificans; ubiA, 4-hydroxybenzoate octaprenyltransferase from E. coli.