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Effect of PhaPAc expression on P(3HB) accumulation in the PhaCAc-expressing strain (pBBR1::phaCAcABRe) (a) and the PhaCRe-expressing strain (pBBR1::phaCABRe) (b). A higher l-arabinose concentration induced a stronger expression of PhaPAc in the araBAD system. Empty plasmid pBAD33 was retained in each control strain instead of using pBAD::TEE+phaPAc. Residual cell mass was calculated as the dry cell weight minus P(3HB). Error bars indicate the standard deviations (n = 3).
