From: A systematic optimization of styrene biosynthesis in Escherichia coli BL21(DE3)
Step | Optimization strategy | Strain | Plasmid | Yield (mg/L) | Improvement over previous step (%) | Improvement over original step (%) |
---|---|---|---|---|---|---|
1 | Enzyme screening and codon optimization | E. coli BL01 | pACYC-AtPAL-FDC1 | 55 | – | – |
2 | Plasmid optimization | E. coli BL05 | pTrc-AtPAL-FDC1 | 103 | 187 | 187 |
3 | Co-expression of aroF and pheA | E. coli BL0501 | pTrc-AtPAL-FDC1 and pACYC-aroF-pheA | 210 | 203 | 382 |
4 | Co-expression of aroF, pheA, ppsA, and tktA | E. coli BL0801 | pTrc-AtPAL-FDC1-ppsA-tktA and pACYC-aroF-pheA | 275 | 131 | 500 |
5 | Expression time optimization | E. coli BL0801 | pTrc-AtPAL-FDC1-ppsA-tktA and pACYC-aroF-pheA | 275 | 100 | 500 |
6 | In situ extraction | E. coli BL0801 | pTrc-AtPAL-FDC1-ppsA-tktA and pACYC-aroF-pheA-tktA-ppsA | 350 | 127 | 636 |