Part:BBa_K5133007

Microcin M

Group: GEC-China (iGEM 2024, team number: #5133)

Brief introduction

This basic part is derived from plasmid pFB398^[1], including a DNA sequence for coding Microcin M, an antimicrobial peptide produced by probiotic E. coli Nissle 1917. By assembling with T7 promoter (BBa_K5133000), RBS (BBa_K5133001), and T7 terminator (BBa_K5133003) derived from plasmid pJL1^[2], this part is used for the construction of composite part BBa_K5133008 to demonstrate the in vitro production of antimicrobial peptides by CFPS.

Design and characterization

The plasmid design of this biological part is shown as Figure 1, assembled with iGEM standard backbone pSB1C3. To validate the correctness of DNA sequence, result of Sanger sequencing for BBa_K5133008 show the successful assembly among T7 promoter (BBa_K5133000), RBS (BBa_K5133001), Microcin M (this part), and T7 terminator (BBa_K5133003) in Figure 2.

Figure 1. Schematic design of this part, generated by SnapGene.

Figure 2. Validation of DNA sequence by Sanger sequencing, generated by SnapGene.

Usages

This part is used for the construction of composite part BBa_K5133008 (Microcin M generator) to demonstrate the feasibility of in vitro antimicrobial peptide production by CFPS. Please see the detailed experimental results in BBa_K5133008.

DNA sequence (from 5' to 3')

atgagaaaactatctgaaaatgaaataaaacaaatatctggaggtgacgggaatgacgggcaggcagaattaattgctattggttcacttgctggtacgtttattagcccgggatttggttctattgcaggggcttat ataggtgataaagtacattcatgggcaacgactgcgacggttagtccctccatgtctccctcaggtataggattatcatcccagtttggatccggcagaggtacatcaagtgcctcttcgtctgcggggagtggaagt catcatcatcatcatcactaa

Red font: 6×His-Tag, for detecting the in vitro production of Microcin M by Western-Blot analysis

References

[1] Ba, F. et al. Expanding the toolbox of probiotic Escherichia coli Nissle 1917 for synthetic biology. Biotechnology Journal 19, 2300327 (2024). doi: 10.1002/biot.202300327

[2] https://www.addgene.org/69496/

Sequence and Features

Assembly Compatibility:

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

  Illegal BamHI site found at 226
  
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  COMPATIBLE WITH RFC[1000]