Team:KULeuven/Lab/Key/Lock/AntiKey

From 2009.igem.org

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(Key/Lock/AntiKey)
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{{Team:KULeuven/Common/BeginHeader}}
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{{Team:KULeuven/Common/SubMenu_Project}}
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{{Team:KULeuven/Common/EndHeader}}
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=Key/Lock/AntiKey=
=Key/Lock/AntiKey=
==Goal==
==Goal==
-
We want to test the affinity of the key for the lock, and measure the amount of input signals needed to activate transcription. On the other hand we want to test the effect of adding the antikey on the level of transcription.
+
We want to test the affinity of the Key for the Lock and measure the amount of input signals needed to activate transcription. On the other hand, we want to test the effect of adding the Antikey at the level of transcription.
 +
 
 +
 
[[Image:endgoals.jpg‎|center|thumb|600px|End Goals for the systems]]
[[Image:endgoals.jpg‎|center|thumb|600px|End Goals for the systems]]
[[Image:testdevices.jpg‎|center|thumb|600px|How we will test if the system works]]
[[Image:testdevices.jpg‎|center|thumb|600px|How we will test if the system works]]
-
First we will make the test devices for the key and lock. Both Key and Lock will be made constitutively. If we see GFP, we will know the key is working.  We don’t need to test the system much rigorously, since last year’s team already did this.
 
-
If we than also add the antikey device, we can measure how the rate of transcription lowers, depending on the amount of Tetracycline added.
 
-
==required==
 
-
*biobricks:  
+
First, we will prepare the test devices for the Key and Lock. Both Key and Lock are made constitutively. If GFP is present, we know the Key works.  The system doesn't need more rigorous testing, since last year’s team already did this.
 +
If we thereupon add the Antikey device, we can measure how the rate of transcription lowers, depending on the amount of tetracycline added.
 +
 
 +
==Required==
 +
 
 +
*Biobricks:  
For the Key device
For the Key device
-
#J23066 + B0015: De Key sequence with terminator is ordered at GeneArt.  
+
#{{kulpart|BBa_J23066}} + {{kulpart|BBa_B0015}}: The Key sequence with terminator is ordered at GeneArt.  
-
#J23110: promotor, plasmid present in the lab.
+
#{{kulpart|BBa_J23110}}: Promotor, plasmid present in the lab.
#Restriction enzymes EcoRI, XbaI and SpeI
#Restriction enzymes EcoRI, XbaI and SpeI
#K12 E. Coli strains ( No special needs)
#K12 E. Coli strains ( No special needs)
For the Lock device
For the Lock device
-
#J23110: promotor, plasmid present in the lab
+
#{{kulpart|BBa_J23110}}: Promotor, plasmid present in the lab
-
#J23078: Lock Sequence is ordered at GeneArt
+
#{{kulpart|BBa_J23078}}: Lock Sequence is ordered at GeneArt
-
#K145015 + B0015: GFP + LVA part present in the lab with terminator attached
+
#{{kulpart|BBa_K145015}} + {{kulpart|BBa_B0015}}: GFP + LVA part present in the lab with terminator attached
For the AntiKey device
For the AntiKey device
-
#K145201: TetR promotor, present in the lab
+
#{{kulpart|BBa_K145201}}: TetR promotor, present in the lab
-
#K238005 + B0015: ordered at GeneArt
+
#{{kulpart|BBa_K238005}} + B0015: Ordered at GeneArt
==Steps==
==Steps==
-
• First all plasmids still present in the lab need to be isolated, so they’re ready to use. Then the GeneArt sequence of the Key can be ligated in the J23110 promotor plasmid.
+
• First, all plasmids still present in the lab need to be isolated, so they’re ready to use. Then the GeneArt sequence of the Key can be ligated in the {{kulpart|BBa_J23110}} promotor plasmid.
-
• Next the J23110 Promotor can be ligated to the GeneArt Lock sequence. If that’s done, the K145015+B0015 construct can be ligated to the promotor/lock sequence.
+
• Next, the {{kulpart|BBa_J23110}} promotor can be ligated to the GeneArt Lock sequence. If that’s done, the {{kulpart|BBa_K145015}}+{{kulpart|BBa_B0015}} construct can be ligated to the promotor/Lock sequence.
-
• These constructed plasmids can then be electroporated into the K12 E. coli cells and a GFP assay can be done, checking if the Key/Lock system works properly. At this time, we also need to measure the intensity or rate of fluorescence, in order to later check if the Antikey works.
+
• These constructed plasmids can then be electroporated into the K12 E. coli cells and a GFP assay can be done to check if the Key/Lock system works properly. At this moment, we also need to measure the intensity or rate of fluorescence, in order to verify later if the Antikey works.
-
• At the same time the K145201 promotor can be ligated to the AntiKey GeneArt sequence, making the Antikey device.
+
• At the same time the {{kulpart|BBa_K145201}} promotor can be ligated to the AntiKey GeneArt sequence, making the Antikey device.
• In order to test the Antikey, all 3 plasmids need to be electroporated into the E.coli strains. Important is that all 3 plasmids contain a different control system (LacZ, Ampicillin or Kanamycin), so we can be sure the strains contain all three plasmids.
• In order to test the Antikey, all 3 plasmids need to be electroporated into the E.coli strains. Important is that all 3 plasmids contain a different control system (LacZ, Ampicillin or Kanamycin), so we can be sure the strains contain all three plasmids.
• By comparing the GFP results with and without Antikey, we can investigate whether our Antikey has an effect on the transcription of GFP.
• By comparing the GFP results with and without Antikey, we can investigate whether our Antikey has an effect on the transcription of GFP.
-
 
==Important==
==Important==
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II. Make sure the plates you grow the bacteria on contain the right antibiotic.
II. Make sure the plates you grow the bacteria on contain the right antibiotic.
-
III. You should always be able to identify not only the transformed colonies, but more importantly the recombinant colonies.
+
III. You should always be able to identify not only the transformed colonies, but more importantly the recombinant colonies. This can be done by putting all three vectors in the cell or by combining two devices on one plasmid.

Latest revision as of 11:51, 10 August 2009

Contents

Key/Lock/AntiKey

Goal

We want to test the affinity of the Key for the Lock and measure the amount of input signals needed to activate transcription. On the other hand, we want to test the effect of adding the Antikey at the level of transcription.


End Goals for the systems
How we will test if the system works


First, we will prepare the test devices for the Key and Lock. Both Key and Lock are made constitutively. If GFP is present, we know the Key works. The system doesn't need more rigorous testing, since last year’s team already did this. If we thereupon add the Antikey device, we can measure how the rate of transcription lowers, depending on the amount of tetracycline added.

Required

  • Biobricks:

For the Key device

  1. + : The Key sequence with terminator is ordered at GeneArt.
    Promotor, plasmid present in the lab.
  2. Restriction enzymes EcoRI, XbaI and SpeI
  3. K12 E. Coli strains ( No special needs)

For the Lock device

  1. Promotor, plasmid present in the lab
    Lock Sequence is ordered at GeneArt
  2. + : GFP + LVA part present in the lab with terminator attached

For the AntiKey device

  1. TetR promotor, present in the lab
  2. + B0015: Ordered at GeneArt

Steps

• First, all plasmids still present in the lab need to be isolated, so they’re ready to use. Then the GeneArt sequence of the Key can be ligated in the promotor plasmid.

• Next, the promotor can be ligated to the GeneArt Lock sequence. If that’s done, the + construct can be ligated to the promotor/Lock sequence.

• These constructed plasmids can then be electroporated into the K12 E. coli cells and a GFP assay can be done to check if the Key/Lock system works properly. At this moment, we also need to measure the intensity or rate of fluorescence, in order to verify later if the Antikey works.

• At the same time the promotor can be ligated to the AntiKey GeneArt sequence, making the Antikey device.

• In order to test the Antikey, all 3 plasmids need to be electroporated into the E.coli strains. Important is that all 3 plasmids contain a different control system (LacZ, Ampicillin or Kanamycin), so we can be sure the strains contain all three plasmids.

• By comparing the GFP results with and without Antikey, we can investigate whether our Antikey has an effect on the transcription of GFP.

Important

I. Always make sure you never cut with an illegal restriction enzyme.

II. Make sure the plates you grow the bacteria on contain the right antibiotic.

III. You should always be able to identify not only the transformed colonies, but more importantly the recombinant colonies. This can be done by putting all three vectors in the cell or by combining two devices on one plasmid.