Part:BBa_K4197012

mRFP1 under control of ihfB800 promoter

Red fluorescent protein mRFP1 expressed from a constitutive promoter of E. coli.

Introduction

This part is composed of the gene coding for the mRFP1 red fluorescent protein (given by Manon Barthe, a researcher at Toulouse Biotechnology Institute), under control of the 800 first base pairs of the ihfB promoter (see BBa_K4197014. This promoter has been identified as constitutive E. coli promoter (Weglenska et al., 1996). It was used for constitutive expression of fluorescent proteins in E. coli (Barthe et al., 2020) and appears as strong enough to permit sufficient expression of mRFP1 without inclusion bodies.

Construction

The objective of the INSA-UPS 2022 team was to use the ihfB800 promoter to express mRFP1 into E. coli Tuner (DE3) cells. Unfortunately, expression of the fluorescent protein was not successful (see BBa_K4197003).

References

More information about the project for which the part was created: DAISY (INSA-UPS 2022)

Other parts of fluorescent proteins with ihfB800:
- mTagBFP
- mScarlet-I

1. Wȩgleńska, A., Jacob, B., & Sirko, A. (1996). Transcriptional pattern of Escherichia coli ihfB (himD) gene expression. Gene, 181(1-2), 85–88. https://doi.org/10.1016/s0378-1119(96)00468-4
2. Barthe, M., Tchouanti, J., Gomes, P. H., Bideaux, C., Lestrade, D., Graham, C., Steyer, J.-P., Meleard, S., Harmand, J., Gorret, N., Cocaign-Bousquet, M., & Enjalbert, B. (2020). Availability of the Molecular Switch XylR Controls Phenotypic Heterogeneity and Lag Duration during Escherichia coli Adaptation from Glucose to Xylose. mBio, 11(6), Article e02938-20. https://doi.org/10.1128/mbio.02938-20

Sequence and Features

Assembly Compatibility:

• 10
  INCOMPATIBLE WITH RFC[10]

  Illegal EcoRI site found at 1526
  Illegal XbaI site found at 1511
  Illegal PstI site found at 213
  Illegal PstI site found at 224
  Illegal PstI site found at 342
  
• 12
  INCOMPATIBLE WITH RFC[12]

  Illegal EcoRI site found at 1526
  Illegal PstI site found at 213
  Illegal PstI site found at 224
  Illegal PstI site found at 342
  Illegal NotI site found at 1518
  
• 21
  INCOMPATIBLE WITH RFC[21]

  Illegal EcoRI site found at 1526
  
• 23
  INCOMPATIBLE WITH RFC[23]

  Illegal EcoRI site found at 1526
  Illegal XbaI site found at 1511
  Illegal PstI site found at 213
  Illegal PstI site found at 224
  Illegal PstI site found at 342
  
• 25
  INCOMPATIBLE WITH RFC[25]

  Illegal EcoRI site found at 1526
  Illegal XbaI site found at 1511
  Illegal PstI site found at 213
  Illegal PstI site found at 224
  Illegal PstI site found at 342
  Illegal AgeI site found at 329
  Illegal AgeI site found at 1359
  Illegal AgeI site found at 1471
  
• 1000
  COMPATIBLE WITH RFC[1000]