Part:BBa_K1412614

Characterize the efficiency of promoter(BBa_K206000) with chemotaxis

---

BBa_K1412614: pBAD-RBS(1)-CheZ-TT

This part consists of a CheZ gene which can express CheZ protein deciding E.coli whether tumble or swim straight. In this light, we can characterize the efficiency of promoter by just change different promoters before a CheZ gene. Then we can characterize the efficiency of promoter via measuring the migration distance positively associated with the expression strength of CheZ protein.

Usage

---

When we want to characterize the efficiency of RBS, we usually link the RBS with GFP, then characterize the RBS by just measure the fluorescence intensity of GFP. In our part, you need just link RBS after a Plac promoter and before a CheZ gene, ending with a TT terminator(Plac-RBS(changeable)-CheZ-TT). Then transfer this gene circuit into E.coli (CheZ knocked out), and coat plates, culuture on semi-solid medium to measure the migration diameter of E.coli.

Relevant parts

---

BBa_K1412000

BBa_K1412005

BBa_K1412006

BBa_K1412007

BBa_K1412014

BBa_K1412801

BBa_K1412829

Notes

---

Source

BBa_K206000

BBa_B0034

BBa_K629003

BBa_B0015

Sequence and Features

Assembly Compatibility:

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

  Illegal NheI site found at 125
  
• 21
  INCOMPATIBLE WITH RFC[21]

  Illegal BamHI site found at 65
  
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  COMPATIBLE WITH RFC[1000]

Genetic link stage

1.As a skeleton, TT terminator link with CheZ.

2.Then the skeleton CheZ-TT link to RBS.

3.Next, link RBS-CheZ-TT with promoter Plac.

Characterization stage

1.Transfer the part Plac-RBS-CheZ-TT into E.coli (CheZ knock out), and coat plates, culture for hours to measure the

migration diameter of E.coli.

---