Team:Waterloo/Meet the Microbes

Meet the Microbes

Empty JT2

Empty JT2

Strain

  • Escherichia coli JT2 SKA974

  • This strain has been engineered for optogenetic control using CcaS/R. Its genomic MetE gene is under control of the CcaS/R promoter. It also has a Kanamycin resistance gene in its genome.

Plasmids

  • None

Antibiotic Resistance(s)

  • Kanamycin

Fluorescent Marker

  • None

Can produce methionine?

  • No

Which experiments was I involved in?

JT2 - CcaS/R

JT2 CcaS/R

Strain

  • Escherichia coli JT2 SKA974 This strain has been engineered for optogenetic control using CcaS/R. Its genomic MetE gene is under control of the CcaS/R promoter. It also has a Kanamycin resistance gene in its genome.

Plasmids

  • pSR43.6r (CcaS, its photoreceptor, p15A origin of replication)
  • pSR58.6 (CcaR, sfGFP under the CcaR promoter, ColeI origin of replication)
    • Note that we made 2 versions of this strain. One contains both these plasmids, unaltered, and was used for characterization experiments. We cut GFP out of pSR58.6 for the second version of this strain, and used it for non-characterization experiments.

Antibiotic Resistance(s)

  • Kanamycin
  • Spectinomycin
  • Chloramphenicol

Fluorescent Marker

  • GFP in the characterization version of this strain, only expressed when CcaS/R is activated.

Can produce methionine?

  • Yes, but only when CcaS/R is activated.

Which experiments was I involved in?

  • Is methionine shared between cells?
  • What is the metabolic load of (over)expressing MetE?
  • Can we control growth with red and green light?

Empty DH5alpha

Empty DH5

Strain

  • Escherichia coli DH5alpha

Plasmids

  • None

Antibiotic Resistance(s)

  • None

Fluorescent Marker

  • None

Can produce methionine?

  • Yes, with my wild type genomic MetE gene.

Which experiments was I involved in?

  • Can we reliably measure 2 populations in co-culture?

DH5alpha - GFP

DH5 GFP

Strain

  • Escherichia coli DH5alpha

Plasmids

  • BBa_E0040 in pSB1C3 (GFP biobrick, ColeI origin of replication)
  • a plasmid we constructed that has Spectinomycin resistance and p15A origin of replication

Antibiotic Resistance(s)

  • Spectinomycin
  • Chloramphenicol

Fluorescent Marker

  • GFP, constitutively expressed.

Can produce methionine?

  • Yes, with my wild type genomic MetE gene.

Which experiments was I involved in?

  • Can we reliably measure 2 populations in co-culture?