Difference between revisions of "Team:Arizona State/Experiments"

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<h2> <ins> Amber Mani </ins> </h2>
 
<h2> <ins> Amber Mani </ins> </h2>
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<h2>DNA Gel Extraction from Agarose Gel</h2>
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<h3>Introduction: </h3>
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<p>How to extract specific DNA fragments from an agarose gel.</p>
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<h3>Materials:</h3>
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<ul>
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<li>Sigma GenElute Gel Extraction Kit with included materials:</li>
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<li>15ml culture tubes</li>
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<li>Scalpel</li>
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<li>KB+ Ladder </li>
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<li>GenElute Binding Column G tubes & 2ml collection tubes</li>
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<h3>Procedure:</h3>
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<p>*************1st do restriction digest protocol and run the agarose gel**************</p>
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<ol type="1">
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<li>Use the sample of cells you wish to extract DNA from AFTER completing the protocol for restriction digest on them. </li>
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<li> Run the agarose gel with the digested DNA for 90 minutes at 90 V. </li>
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<li>Use the appropriate sequencing map to 'map' out the length of the strand you want to
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extract by finding the 1st restriction enzyme used and measuring the length of the pairs
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to the 2nd restriction enzyme. Compare to the KB+ Ladder (#SM1331) and the plasmid
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guide. </li>
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<li>Once gel has run use a gel imager to view the DNA strand lengths and identify the
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proper section of DNA you need to extract.
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Removing DNA band </li>
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<li> While gel is on an imager (so you can use UV light to see the bands of DNA) excise the
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DNA fragment of interest from the agarose gel with a clean, sharp scalpel or razor blade.
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Trim excess gel away to minimize the amount of agarose. </li>
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<li>Place gel into a culture tube and weigh the gel - remember to 1st weigh an empty culture
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tube and 'zero' the scale so the weight of the tube is not included. </li>
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<li>Solubilize gel is needed for this step - included in the GenElute kit. Add 3 gel volumes of the gel solubilization solution to the gel tube. (for every 100mg of agarose gel add 300ul
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of the gel solubilization solution). </li>
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<li> Incubate the gel mixture at 50-60C for 10 minutes. As needed for total gel dissolution,
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vortex briefly every 2-3 minutes to aid in gel dissolution. </li>
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<li>Prepare the binding column: place GenElute binding column G into one of the provided 2ml collection tubes. Add 500ul of the column preparation solution to each of the binding columns, centrifuge for one minute and discard the flow through liquid. </li>
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<li>Next go back to the dissolved gel and check the color, should be a yellowish color. </li>
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<li>Add isopropanol: add 1 gel volume of 100% isopropanol and mix completely. </li>
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<li> Bind the DNA: load the solubilized gel solution mixture from the culture tube into the
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binding column (may turn red at this point, this is normal). Centrifuge for one minute and
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discard the flow through liquid. </li>
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<li>Wash column: add 700ul of wash solution (diluted from wash solution concentrate G as
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described under preparation instructions in manual). Centrifuge for one minute. Remove
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the binding column and discard the flow through liquid. replace binding column and
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centrifuge for one more minute and discard the flow through liquid again. </li>
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<h3>Elute DNA: </h3>
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<li> Transfer the binding column to a fresh collection tube and add 50ul of the (preheated to 65C) Elution Solution to the center of the membrane and incubate for one minute. Then
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centrifuge for one minute. What remains in the collection tube can be tested for DNA
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concentration and kept as the collection tube now contains the extracted DNA segments. </li>
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</ol>
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<h2>Colony PCR and Colony Prep</h2>
 
<h2>Colony PCR and Colony Prep</h2>
 
<p>Materials and protocol for running the colony PCR. PCR is used to reproduce (amplify) selected sections of DNA or RNA for analysis. </p>
 
<p>Materials and protocol for running the colony PCR. PCR is used to reproduce (amplify) selected sections of DNA or RNA for analysis. </p>

Revision as of 00:29, 29 September 2017