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Table 2 Variables are showing observed values of periplasmic and cytoplasmic hGH hormone expression

From: Optimization of expression, purification and secretion of functional recombinant human growth hormone in Escherichia coli using modified staphylococcal protein a signal peptide

Run

IPTG

(mM)

Temperature ( ËšC)

Cell density at induction time

(OD600)

Post induction time

(H)

Cytoplasmic Production (ug/ml)

Periplasmic Production (ug/ml)

1

1

20

1.5

16

42

60

2

0.2

33

1.5

16

20

60

3

0.2

20

0.5

4

0

0

4

0.6

26.5

1

4

0

0

5

0.6

26.5

0.5

10

0

0

6

1.3

26.5

1

10

20

0

7

1

33

1.5

4

19

90

8

1

33

0.5

4

0

0

9

0.2

26.5

1

10

32

30

10

0.6

26.5

1.5

10

33

60

11

0.6

20

1

10

9

26

12

0.6

26.5

1

10

35

100

13

1

20

0.5

16

19

0

14

0.6

26.5

1

16

46

84

15

0.6

26.5

1

10

44

95

16

0.6

26.5

1

10

45

110

17

0.2

33

0.5

16

60

147

18

0.2

20

1.5

4

58

54

19

0.6

33

1

10

39

76

20

0.6

26.5

1

10

28

34

21

0.6

26.5

1

10

16

26