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Table 2 Engineering the ALA production in C. glutamicum using the gltX, hemA and hemL from different sources

From: Engineering Corynebacterium glutamicum to produce 5-aminolevulinic acid from glucose

C. glutamicum strains

Expressed genes

Cell biomass (OD600)

ALA (mg/L)

Lactate (g/L)

Acetate (g/L)

PBG (mg/L)

Heme (mg/L)

PECX

–

18.84 ± 0.76

25.44 ± 1.56

7.45 ± 0.46

32.41 ± 1.27

1.26 ± 0.26

0.12 ± 0.05

CEAL

hemA (C. glutamicum) and hemL (E. coli)

18.07 ± 0.84

128.13 ± 8.94

4.25 ± 0.19

26.24 ± 2.44

21.34 ± 2.47

1.54 ± 0.28

SCAL

hemA M (S. arizona) and hemL (C. glutamicum)

17.75 ± 0.72

83.47 ± 7.33

0.19 ± 0.07

4.23 ± 0.59

11.26 ± 1.24

0.98 ± 0.18

SEAL

hemA M (S. arizona) and hemL (E. coli)

18.33 ± 0.88

425.11 ± 15.69

0.04 ± 0.008

0.28 ± 0.03

97.87 ± 4.02

3.18 ± 0.54

PSEC

hemA M (S. arizona), hemL (E. coli) and gltX (C. glutamicum)

16.81 ± 0.74

251.36 ± 10.11

0.17 ± 0.03

1.45 ± 0.12

117.92 ± 2.49

4.15 ± 0.75

PSEE

hemA M (S. arizona), hemL (E. coli) and gltX (E. coli)

16.45 ± 0.78

276.21 ± 9.26

0.14 ± 0.05

1.12 ± 0.34

121.38 ± 2.53

4.22 ± 0.62

  1. Fermentations were performed at 180 rpm for 144 h, and the initial glucose concentration was 40 g/L
  2. Results are the means ± standard deviations in three individual experiments