Part:BBa_K2617006

GroEL

Promoting folding of misfolded polypeptides and enhancing the tolerance of Escherichia coli to butanol.

Sequence and Features

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  COMPATIBLE WITH RFC[12]
• 21
  COMPATIBLE WITH RFC[21]
• 23
  COMPATIBLE WITH RFC[23]
• 25
  INCOMPATIBLE WITH RFC[25]

  Illegal AgeI site found at 880
  Illegal AgeI site found at 1341
  
• 1000
  COMPATIBLE WITH RFC[1000]

Characterization

During the production process, the accumulation of butanol will exert a great inhibitory effect on cell growth. Therefore, we will introduce the GroEL gene and GroES gene from C. acetobutylicum to make escherichia coli heterologous expression of heat shock protein (a molecular chaperone), which has been shown to increase butanol production [1].To test butanol tolerance, the control strain DH5α, and the GroESL overexpression strain DH5α were grown in the presence of 1% butanol. Fig. 1 shows that GroESL have a good effect on butanol tolerance.

Fig. 1 After adding 0.3ml butanol in 30ml LB medium, the measurement of optical density (A600) deference between DH5α with GroESL and Negative Control in 24 hour.

References

1.Zingaro, K. A., & Papoutsakis, E. T. (2013). GroESL overexpression imparts Escherichia coli tolerance to i-, n-, and 2-butanol, 1, 2, 4-butanetriol and ethanol with complex and unpredictable patterns. Metabolic engineering, 15, 196-205.