Difference between revisions of "Team:Ionis Paris/17 09 16"

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<li><p>Set the following parameters for the PCR reaction :</p>
 
<li><p>Set the following parameters for the PCR reaction :</p>
 
          
 
          
−
         <ul><li><p><b>PA (2285 bp)</b></p></li>
+
         <ul><li><p><u>PA (2285 bp)</u></p></li>
 
               <li><p>Lid temperature: 95°C</p></li>
 
               <li><p>Lid temperature: 95°C</p></li>
 
               <li><p>Initial denaturation : 95°C, 30s</p></li>
 
               <li><p>Initial denaturation : 95°C, 30s</p></li>
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         </ul>
 
         </ul>
  
−
         <ul><li><p><b>PB (1037 bp)</b></p></li>
+
         <ul><li><p><u>PB (1037 bp)</u></p></li>
 
               <li><p>Lid temperature: 95°C</p></li>
 
               <li><p>Lid temperature: 95°C</p></li>
 
               <li><p>Initial denaturation : 95°C, 30s</p></li>
 
               <li><p>Initial denaturation : 95°C, 30s</p></li>
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         </ul></li>
 
         </ul></li>
−
 
−
 
−
 
−
 
  
  
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<ol>
 
<ol>
 
<li><p>Put 1 g of agarose + 100 mL of TAE 1X in a bottle of 500 mL</p></li>
 
<li><p>Put 1 g of agarose + 100 mL of TAE 1X in a bottle of 500 mL</p></li>
−
<li><p>Mix and heat it 2 min 30 s in the microwaves. Wait the cooling of the bottle until it is tepid.</p></li>
+
<li><p>Mix and heat it 2 min 30 s in the microwave. Wait the cooling of the bottle until it is tepid.</p></li>
 
<li><p>Add 5 µL of Gel Red 10,000 X (0.5 X final)</p></li>
 
<li><p>Add 5 µL of Gel Red 10,000 X (0.5 X final)</p></li>
 
<li><p>Flow the gel and place the combs</p></li>
 
<li><p>Flow the gel and place the combs</p></li>
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                                 <figure class="postImg">
 
                                 <figure class="postImg">
−
                                     <img src="https://static.igem.org/mediawiki/2016/b/b9/T--Ionis_Paris--Notebook06_09Fig.2.png" alt="">
+
                                     <img src="https://static.igem.org/mediawiki/2016/1/1e/T--Ionis_Paris--Notebook17_09Table1.png" alt="">
 
                                 </figure>
 
                                 </figure>
  
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</ol>
 
</ol>
  
−
<h3>Mini-culture: bacteria transformed with BB12mut and BB123mut</h3>
+
<h3>PCR Purification</h3>
−
<p>16 Mini-cultures of bacteria transformed with BB12mut (3, 4, 5, 7, 8, 9, 11, 12) and BB123mut (1, 2, 4, 5, 7, 10, 11, 13).<br/>
+
<p>QIAquick PCR purification kit (qiagen, 28106), according to the protocol given by the supplier (available on <a href="https://www.qiagen.com/fi/resources/resourcedetail?id=390a728a-e6fc-43f7-bf59-b12091cc4380&lang=en"><font colo ="Deep Pink">this link</font></a>).</p>
−
Put the colony with satisfying PCR results from the plates divided into squares to a 50mL Falcon tube containing 5mL LB+Cm.</p>
+
  
 +
<ol> <li><p>Add 5 volumes Buffer PB (250 µL) to 1 volume of the PCR reaction (50 µL) and mix. The color of the mixture is yellow.</p></li>
 +
    <li><p>Load the sample to the QIAquick column. Centrifuge for 1 min at 13,000 rpm and discard flow-through</p></li>
 +
    <li><p>Add 750 µL Buffer PE. Centrifuge for 1 min at 13,000 rpm and discard flow-through.</p></li>
 +
    <li><p>Centrifuge once more for 1 min at 13,000 rpm.</p></li>
 +
    <li><p>Place each QIAquick column in a clean 1.5 mL microcentrifuge tube.</p></li>
 +
    <li><p>Add 30 µL Buffer EB to the center of the QIAquick membrane, let stand for 1 min, and centrifuge for 1 min at 13,000 rpm.</p></li>
 +
    <li><p>Calculate the quantity of DNA with the Nanodrop.</p></li>
 +
    <li><p>Store the purified DNA at -20°C.</p></li>
 +
</ol>
 
    
 
    
 
                                     <h4 class="blog_topHd">Results</h4>     
 
                                     <h4 class="blog_topHd">Results</h4>     
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<p>2nd electrophoresis: Expected results / Obtained results</p>
 
<p>2nd electrophoresis: Expected results / Obtained results</p>
  
−
                                <figure class="postImg">
+
 
−
                                    <img src="https://static.igem.org/mediawiki/2016/f/f3/T--Ionis_Paris--Notebook06_09Fig.4.png" alt="">
+
                                  <div class="col-md-6">
−
                                </figure>                            
+
                                                    <figure>
 +
                                                        <img src="https://static.igem.org/mediawiki/2016/2/2d/T--Ionis_Paris--Notebook17_09Fig2.png" alt="">
 +
                                                    </figure>
 +
                                            </div>
 +
 
 +
 
 +
                                  <div class="col-md-6">
 +
                                                    <figure>
 +
                                                        <img src="https://static.igem.org/mediawiki/2016/9/9b/T--Ionis_Paris--Notebook17_09Fig1.png" alt="">
 +
                                                    </figure>  
 +
                                            </div>
 +
 
 +
 
 +
 
 +
                         
  
 
                                         <h4 class="blog_topHd">Interpretation</h4>
 
                                         <h4 class="blog_topHd">Interpretation</h4>
−
<p>We obtain the desired strip for BB12mut, for all the colonies (n°1 to 14). As shown on the gel above, the strips are closed to 2.2 kb, which is the size of P1+P2. A sequencing is necessary to be sure of the obtained biobrick.</p>
+
<p>
 +
We obtain the desired strip for PA and PB, as shown on the gel above the strips are closed to 2,285 bp and 1,037 bp.<br/>
 +
It seems that PA and PB have been properly amplified.</p>
  
−
<p>We obtain the desired strip for BB123, for all the colonies except for n°7. As shown on the gel above, the strips are closed to 3.4 kb, which is the size of P1+P2+P3. A sequencing is necessary to be sure of the obtained biobrick.</p>
 
  
 
                                     <div role="tabpanel" class="tab-pane fade" id="popular_post">
 
                                     <div role="tabpanel" class="tab-pane fade" id="popular_post">

Revision as of 01:16, 19 October 2016

PCR : on PA and PB

Objectives

The overall purpose is to create PA (Pr - RBS - XylR - Term) and PB (Pu - RBS - Gaussia - Term) from our biosensor.

Materials

DNA fragments : BB123mut-6 (from mini prep 07/09)
Primers: A12 (forward) and BBA-R (reverse) for PA, and BBB-F (forward) and A13 (reverse) for PB.

Protocol

PCR

  1. Mix for 5 samples (Total volume of Mix: 230 µL), in an Eppendorf tube:

    • 198.75 µL H2O

    • 25 µL Buffer Taq (1 X final, NEB #B9014S)

    • 5 µL dNTP (200 µM final, NEB #N0447S)

    • 1.25 µL Taq polymerase (2.5 units / 50 µL PCR final, NEB #M0273S)

  2. Add in 4 PCR tubes, in the following order:

    • 46 µL Mix

    • 1 µL primer forward (A12 or BBB-F)

    • 1 µL primer reverse (BBA-R or A13)

    • 2 µL of DNA fragment (BB123mut) or 2 µL H20 (Controls A and B)

  3. —> Gently mix the reaction and perform a short spin centrifugation

  4. Set the following parameters for the PCR reaction :

    • PA (2285 bp)

    • Lid temperature: 95°C

    • Initial denaturation : 95°C, 30s

    • 30 cycles of :

      • 95°C, 30 s

      • 58°C, 60 s

      • 68°C, 2 min 17 s

    • Final extension : 68°C, 5 min

    • Hold : 4°C

    • PB (1037 bp)

    • Lid temperature: 95°C

    • Initial denaturation : 95°C, 30s

    • 30 cycles of :

      • 95°C, 30 s

      • 58°C, 60 s

      • 68°C, 1 min 02 s

    • Final extension : 68°C, 5 min

    • Hold : 4°C

    5. Electrophoresis: for screening the PCR results

    1% Agarose gel:

    1. Put 1 g of agarose + 100 mL of TAE 1X in a bottle of 500 mL

    2. Mix and heat it 2 min 30 s in the microwave. Wait the cooling of the bottle until it is tepid.

    3. Add 5 µL of Gel Red 10,000 X (0.5 X final)

    4. Flow the gel and place the combs

    5. Wait until it is solidified. Remove slowly the combs.

    Drop-off:

    1. Short Speed centrifugation of samples

    2. Addition of 2 µL of Purple loading dye 6 X in 10 µL of sample

    3. Drop-off 10 µL of Purple ladder and 12 µL of each samples.

    4. Run at 90 V.

    PCR Purification

    QIAquick PCR purification kit (qiagen, 28106), according to the protocol given by the supplier (available on this link).

    1. Add 5 volumes Buffer PB (250 µL) to 1 volume of the PCR reaction (50 µL) and mix. The color of the mixture is yellow.

    2. Load the sample to the QIAquick column. Centrifuge for 1 min at 13,000 rpm and discard flow-through

    3. Add 750 µL Buffer PE. Centrifuge for 1 min at 13,000 rpm and discard flow-through.

    4. Centrifuge once more for 1 min at 13,000 rpm.

    5. Place each QIAquick column in a clean 1.5 mL microcentrifuge tube.

    6. Add 30 µL Buffer EB to the center of the QIAquick membrane, let stand for 1 min, and centrifuge for 1 min at 13,000 rpm.

    7. Calculate the quantity of DNA with the Nanodrop.

    8. Store the purified DNA at -20°C.

    Results

    1st electrophoresis: Expected results / Obtained results

    2nd electrophoresis: Expected results / Obtained results

    Interpretation

    We obtain the desired strip for PA and PB, as shown on the gel above the strips are closed to 2,285 bp and 1,037 bp.
    It seems that PA and PB have been properly amplified.

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