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Fig. 3 | Microbial Cell Factories

Fig. 3

From: High-yield production of l-serine through a novel identified exporter combined with synthetic pathway in Corynebacterium glutamicum

Fig. 3

Effect of the exporters thrE and serE deletion or overexpression on SSAAI. a Cell growth (gray bar with slash) and l-serine titer (white bar) of SSAAI, thrE deletion strain SSAAI ∆thrE, serE deletion strain SSAAI ∆serE, thrE and serE deletion strain SSAAI ∆serE ∆thrE, thrE overexpression strain SSAAI-thrE, serE overexpression strain SSAAI-serE, and thrE and serE double overexpression strain SSAAI-serE -thrE. b Cell growth (squares) and l-serine titer (circles) of SSAAI (black), serE deletion strain SSAAI ∆serE (dark gray), thrE deletion strain SSAAI ∆thrE (gray), and thrE and serE deletion strain SSAAI ∆serE ∆thrE (white). c Cell growth (squares) and l-serine titer (circles) of SSAAI (black), serE overexpression strain SSAAI-serE (dark gray), thrE overexpression strain SSAAI-thrE (gray), and thrE and serE double overexpression strain SSAAI-serE-thrE (white). d The growth rates of SSAAI-serE-thrE (red) and SSAAI (black)

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