Difference between revisions of "Part:BBa K1949102:Design"

(Materials and Methods)
 
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===Design Notes===
 
===Design Notes===
 
sequence confirmed
 
sequence confirmed
 
===Materials and Methods===
 
 
====Construction====
 
-Strain
 
 
All the plasmids were prepared in XL1-Blue strain.
 
 
=====Ⅰ.Adjustment of MazF Expression=====
 
 
-Plasmids
 
 
GFP :  Pcon - <i>rbs</i> - <i>gfp</i> (pSB6A1), Plac - <i>rbs</i> (pSB3K3)<br>
 
 
MazF : PBAD - <i>rbs - mazF - tt</i> - Pcon - <i>rbs - gfp</i> (pSB6A1), Plac - <i>rbs</i> (pSB3K3)
 
 
=====Ⅱ.<i>mazEF</i> System Assay ~Stop & GO~=====
 
 
-Plasmids
 
 
vector : PBAD - <i>rbs</i> (pSB6A1), Plac - <i>rbs</i> (pSB3K3)
 
 
GFP : Pcon - <i>rbs - gfp</i> (pSB6A1), Plac - <i>rbs</i> (pSB3K3)
 
 
MazF + MazE : PBAD - <i>rbs - mazF - tt</i> - Pcon - <i>rbs - gfp</i> (pSB6A1), Plac - <i>rbs - mazE</i> (pSB3K3)
 
 
MazF : PBAD - <i>rbs - mazF - tt</i> - Pcon - <i>rbs - gfp</i> (pSB6A1), Plac - <i>rbs</i> (pSB3K3)
 
 
=====Ⅲ.<i>mazEF</i> System Assay ~Go & Stop~=====
 
 
-Plasmids
 
 
vector : PBAD - <i>rbs</i>(pSB6A1), Plac - <i>rbs</i> (pSB3K3)
 
 
GFP : Pcon - <i>rbs - gfp</i> (pSB6A1), Plac - <i>rbs</i>(pSB3K3)
 
 
MazF + MazE(weak) : PBAD - <i>rbs - mazF - tt</i> - Pcon - <i>rbs - gfp</i> (pSB6A1), Pcon - <i>rbs</i>(weak) - <i>mazE</i> (pSB3K3)
 
 
MazF + MazE : PBAD - <i>rbs - mazF - tt</i> - Pcon - <i>rbs - gfp</i> (pSB6A1), Pcon - <i>rbs - mazE</i> (pSB3K3)
 
 
MazF : PBAD - <i>rbs - mazF - tt</i> - Pcon - <i>rbs - gfp</i> (pSB6A1), vector (pSB3K3)
 
 
=====Ⅳ.Control of Cell Growth=====
 
 
-Plasmid
 
 
vector : PBAD - <i>rbs</i> (pSB6A1), Plac - <i>rbs</i> (pSB3K3)
 
 
MazF + MazE : PBAD - <i>rbs - mazF</i> (pSB6A1), Plac - <i>rbs - mazE</i> (pSB3K3)
 
 
MazF : PBAD - <i>rbs - mazF</i>(pSB6A1), Plac - <i>rbs</i> (pSB3K3)
 
  
 
====Assay protocol====
 
====Assay protocol====
=====Ⅰ.Adjustment of MazF Expression=====
+
=====Ⅰ.Adjustment of <i>mazF</i> Expression=====
  
  
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1)Measure the turbidity of the pre-cultures.
 
1)Measure the turbidity of the pre-cultures.
  
2)Dilute the pre- cultures to 1 / 30 into LB medium containing 4 mL ampicillin and kanamycin.
+
2)Dilute the pre- cultures to 1 / 30 into 4 mL LB medium containing ampicillin(50 microg / mL) and kanamycin(50 microg / mL).
  
 
3)Incubate with vigorous shaking so that the turbidity becomes 0.03.
 
3)Incubate with vigorous shaking so that the turbidity becomes 0.03.
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1)Measure the turbidity of the pre-cultures.
 
1)Measure the turbidity of the pre-cultures.
  
2)Dilute the pre- cultures to 1 / 30 into LB medium containing 4 mL ampicillin and kanamycin.
+
2)Dilute the pre-cultures to 1 / 30 into 4 mL LB medium containing ampicillin(50 microg / mL) and kanamycin(50 microg / mL).
  
 
3)Incubate with vigorous shaking so that turbidity becomes 0.03.
 
3)Incubate with vigorous shaking so that turbidity becomes 0.03.
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1)Measure the turbidity of the pre-cultures.
 
1)Measure the turbidity of the pre-cultures.
  
2)Dilute the pre- cultures to 1 / 30 into LB medium containing 4 mL ampicillin and kanamycin.  
+
2)Dilute the pre-cultures to 1 / 30 into 4 mL LB medium containing ampicillin(50 microg / mL) and kanamycin(50 microg / mL).  
  
 
3)Incubate with vigorous shaking so that the turbidity becomes 0.03.
 
3)Incubate with vigorous shaking so that the turbidity becomes 0.03.
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5)Incubate with vigorous shaking for 24 h, and measure the turbidity and the RFU of GFP at proper times.
 
5)Incubate with vigorous shaking for 24 h, and measure the turbidity and the RFU of GFP at proper times.
  
=====Ⅳ.Control of Cell Growth=====
+
=====Ⅳ.<i>mazEF</i> System Assay on the LB Agar Plate(Queen's Caprice)=====
 
1)Making LB agar medium(see Table 1.).<br>
 
1)Making LB agar medium(see Table 1.).<br>
 
[[Image:Agar medium.jpg|center|600px]]<br>
 
[[Image:Agar medium.jpg|center|600px]]<br>
[[Image:Tokyo Tech1.png|thumb|center|600px|Fig. 1. Procedure of experiment]]<br>
+
[[Image:Tokyo Tech1.png|thumb|center|600px|Fig. 1. Overview of the experiment]]<br>
 
2)<i>E. coli</i> are applied at 3 agar medium (in arabinose, in IPTG, in arabinose and IPTG)(Fig. 1.).
 
2)<i>E. coli</i> are applied at 3 agar medium (in arabinose, in IPTG, in arabinose and IPTG)(Fig. 1.).
 
   
 
   

Latest revision as of 03:59, 22 October 2016


PBAD-rbs-mazF-tt-Ptet-rbs-gfp


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    INCOMPATIBLE WITH RFC[12]
    Illegal NheI site found at 1205
  • 21
    INCOMPATIBLE WITH RFC[21]
    Illegal BamHI site found at 1144
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal AgeI site found at 979
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal BsaI.rc site found at 2444
    Illegal SapI site found at 961


Design Notes

sequence confirmed

Assay protocol

Ⅰ.Adjustment of mazF Expression
Pre-culture

1)Suspend colonies on a master plate into LB medium containing ampicillin (50 microg / mL) and kanamycin (50 microg / mL).

2)Incubate with vigorous shaking for 12 h.

Incubation and Assay

1)Measure the turbidity of the pre-cultures.

2)Dilute the pre- cultures to 1 / 30 into 4 mL LB medium containing ampicillin(50 microg / mL) and kanamycin(50 microg / mL).

3)Incubate with vigorous shaking so that the turbidity becomes 0.03.

4)Add arabinose so that the final concentration becomes 0.2%, 0.02%, 0.002% 0.0002% and 0%.

5)Incubate with vigorous shaking for 24 h, and measure the turbidity and the RFU of GFP.

Ⅱ.mazEF System Assay ~Stop & GO~
Pre-culture

1)Suspend colonies on a master plate into LB medium containing ampicillin (50 microg / mL) and kanamycin (50 microg / mL).

2)Incubate with vigorous shaking for 12 h.

Incubation and Assay

1)Measure the turbidity of the pre-cultures.

2)Dilute the pre-cultures to 1 / 30 into 4 mL LB medium containing ampicillin(50 microg / mL) and kanamycin(50 microg / mL).

3)Incubate with vigorous shaking so that turbidity becomes 0.03.

4)Add arabinose so that the final concentration becomes 0.02%.

5)Add IPTG until the concentration becomes 2 mM after adding arabinose.

6)Incubate with vigorous shaking for 24 h, and measure turbidity and RFU of GFP at the proper time.

Ⅲ.mazEF System Assay ~Go & Stop~
Pre-culture

1)Suspend colonies on a master plate into LB medium containing ampicillin (50 microg / mL) and kanamycin (50 microg / mL).

2)Incubate with vigorous shaking for 12 h.

Incubation and Assay

1)Measure the turbidity of the pre-cultures.

2)Dilute the pre-cultures to 1 / 30 into 4 mL LB medium containing ampicillin(50 microg / mL) and kanamycin(50 microg / mL).

3)Incubate with vigorous shaking so that the turbidity becomes 0.03.

4)Add arabinose so that the final concentration becomes 0.02%.

5)Incubate with vigorous shaking for 24 h, and measure the turbidity and the RFU of GFP at proper times.

Ⅳ.mazEF System Assay on the LB Agar Plate(Queen's Caprice)

1)Making LB agar medium(see Table 1.).

Agar medium.jpg

Fig. 1. Overview of the experiment

2)E. coli are applied at 3 agar medium (in arabinose, in IPTG, in arabinose and IPTG)(Fig. 1.).

3)Overnight culture at 37°C for 24 h.

4)To confirm TA system, inoculate colonies of E. coli having plasmids at agar medium containing arabinose and IPTG.

5)Overnight culture at 37°C for 24 h.

6)Inoculate colonies of E. coli into agar medium containing arabinose.

7)Overnight culture at 37°C for 24 h.

8)Inoculate colonies of E. coli into agar medium in arabinose and IPTG.

9)Overnight culture at 37°C for 24 h.

References

1)Hazan, R., B. Sat, and H. Engelberg-Kulka. Escherichia coli mazEF mediated cell death is triggered by various stressful conditions. J. Bacteriol.186:3663–3669.